Solving Geometric Angles

Introduction for solving geometric angles:

The figure which consists of two rays with the same starting point and the angle which can be formed by the two arms on either side of the initial point and it is the vertex angle .There are different types of angles which based on their measuring degrees. Now we are going to see about the solving of geometric angles.


Types of solving geometric angles:


The different types of solving geometric angles is given by,

Right angle

Acute angle

Obtuse angle

Straight angle

Complementary angle

Supplementary angle

Right angle:

A right angle whose measure is 90°, is called a right angle.
Acute angle:

An acute angle whose measure is less than 90° is called an acute angle.

30°, 60°, 70° etc are all acute angles.

Obtuse angle:

An Obtuse angle whose measure is greater than 90° is called an Obtuse angle

120°, 135°, 140° etc are all Obtuse angle

Straight angle:

A Straight angle whose measure is 180° is called a Straight angle

Complementary angle:

A complementary angle is nothing but the sum of two angles measures 90° are called complementary angles.

30°, 60° are complementary angles .

Supplementary angle:

A supplementary angle is nothing but the sum of the two angles which measures 180° are called Supplementary angles.

120°, 60° are Supplementary angles. I have recently faced lot of problem while learning geometry tutoring online free, But thank to online resources of math which helped me to learn myself easily on net.


Example for solving geometric angles:


Ex1:

A geometric angle is 14° more than its complement. What is its measure?

Sol:

Let x° be the required angle.

Its complement=90°-x°

By the given condition:

90°-x°+14°=x°

2x°=104°

X°=52°

Hence required angle=52°

Ex2:

The measure of an geometric solving angle is double the calculate of its supplementary angle. Find its measure.

Sol:

Let the required angle =x°.

Its supplementary angle =180°-x°

By the given condition =2(180°-x°)

=360°-2x°

=120°

Hence required angle=120°

Ex3:

The two supplementary angles are the ratio2:3.Find the angles .

Sol:

Let the two angles in degrees be 2x and 3x

By the given condition=2x+3x=180°

5x=180°

X=36°

Hence the required angles are 2×36°=72° and

3×36°=108°

Geometry Practice Problems

Introduction for learning geometry problem answers:

The subdivision  of mathematics concerned with the properties of lines, curves and surfaces usually divided into pure, algebraic and differential geometry in accordance with mathematical techniques utilized.  The figures of two dimensions is called planes. learning Geometry problem answers is a module of math which involves about the study of shapes, lines, angles, dimensions, relative position of figures etc. it plays vital role in real time application like elevation, projection. Learning geometry problems answers provides many foundational skills and helps to build the thinking skills of logic, deductive reasoning, and analytical reasoning.Let us learn geometry problem answers. I like to share this What are Similar Triangles with you all through my article.


learning geometry problem answers:


A triangle has a perimeter of 56. If 2 of its sides are equal,then the  third side is 5 more than the equal sides, what is the length of the third side?

Solution:

Let y = length of the equal side
perimeter of triangle.

Perimeter of a  triangle = sum of all the 3 sides.
Plug in values of question.
56 = y + y + y + 5

Combine like terms
56 = 3y + 5

3y = 56 – 5
3y = 51
y =17

Note: the third side is 5 more than the equal sides.

So, the length of third side = 17 + 5 =22

Answer: The length of third side is 22.

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learning geometry problem answers:


The perimeter of a rectangle is 400 meters and its length is 3 times its width W. Find Width and Length, and the area of the rectangle.

Solution:

Use the perimeter formula to write.

2 L + 2 W = 400
"its length is 3 times its width W" into a mathematical equation as follows:

L = 3 W
We substitute L = 3 W in the equation 2 L + 2 W = 400.

2(3 W) + 2 W = 320
Expand and group like terms.

8 W = 400
Solve for W.

W = 50 meters
Use the equation L = 3 W to find L.

L = 3 W = 150 meters
Use the formula of the area.

Area = L x W = 150 * 50 = 7500 meters 2.

Geometry Questions

Introduction :

Geometry is a section in math, which deals with many aspects regarding shapes, figures. they involve with construction, study of their properties, area , volume, etc. They include study of solids too. Geometry deals with the entire concepts related to the shapes, solids, etc. Sample questions about the intersecting lines, area are in the following section.


Example geometry questions:


Here are few example geometry questions:

Geometry question 1:

Find the area of the triangle formed by (5,2), (-9,-3), (-3,-5)

Solution:

The formula for finding the area of the triangle formed by  (x1,y1), (x2,y2), (x3,y3)  is 1/2 | [x1(y2 – y3) + x2(y3 – y1) + x3(y1 – y2)] |

Applying the formula,we get

1/2 | [5(-3 + 5) -9(-5 -2) -3(2 + 3)]|

1/2 |10 + 63 – 15|

1/2 |58|

Hence the area of the triangle is 29.


Geometry question 2:

Find the point which divides the line segment joining (-1,2) and (4,-5) in the ratio 3:2

The formula for a point which divides the line joining A(x1,y1) and (x2,y2) in the ratio l:m is

`((lx2 + my1)/( l + m) ,(lx2 + my1)/( l + m)) `

Applying the formula,

The point is

`((3 * 4 + 2 * (-1)) /( 3 + 2) , (3 * (-5) + 2 * 2)/(3 + 2))`

`((10)/(5),(-11)/(5))`

Hence the point is (2,-11/5)

Geometry Shapes Definitions

Introduction to Definitions of Geometry Shapes :

A branch of mathematics concerned with the properties of lines, curves and surfaces usually divided into pure algebraic and differential geometry in accordance with the mathematical techniques utilized. Here we have to learn about different geometry shapes definition. Please express your views of this topic Types of Quadrilaterals by commenting on blog.

List of Different geometry shapes whose definition follows:

Triangle

Quadrilateral

Pentagon

hexagon

Heptagon

Octagon

Square

Circle


Definitions of Geometry shapes - Triangle, Quadrilateral, Pentagon ,Heptagon, Octagon:


Triangle:A triangle is defined as a polygon with three vertices and three sides which are line segments. A triangle with vertices X, Y, and Z is denoted triangle XYZ.It is generally classified as there types they are isosceles, equilateral, and scalene triangle.

Quadrilateral:It is a plane figure having four straight sides. The word quadrilateral is made of the words quad represents the four similarly laterals represents the sides. The sum of interior angles equal to 360 degree. There are many types of quadrilateral are there like trapezoid, parallelogram, rectangle, kite.

Pentagon:A 5-sided polygon (a flat shape with straight sides)

Heptagon:A plane figure having seven sides. If all the interior angles of a heptagon are equal then it is known as regular heptagon .It is also called as septagon.

Octagon:An 8-sided polygon (a flat shape with straight sides).

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Definitions of Geometry shapes - Square, Circle, Hexagon:


Square:A 4-sided polygon (a flat shape with straight sides) where all sides have equal length and every angle is a right angle (90°)

Circle:It is a plane curve formed by the set of all points of a given fixed distance from a fixed point .The fixed point is called the centre and the fixed distance the radius of the circle.

Hexagon:A polygon with six sides. A regular hexagon has all its side of equal length and hence all vertical angles are equal and each being 120 degree. A vertex contains 3 diagonals and hence it has fully 9 diagonals.

Geometry Exam Questions

Introduction to Geometry exam questions:

Geometry is a part of mathematics which is related with the questions of size, relative position of figures and with properties of space. Geometry is one of the branches of sciences. A physical arrangement will  show geometric forms or lines.

Geometry analyzes the relations, properties, and the measurement of solids, planes, lines, and angles the science which covers of the properties and relations of magnitude the geometry of the relations of space.

Preparation for the geometry exam questions are essential. Some of the geometry exam questions are given below: Having problem with Exterior Angles Definition keep reading my upcoming posts, i will try to help you.


Geometry Exam Questions:


Find the correct answer to the following geometry exam questions

Q 1: If the circle has diameter of 8, what is the circumference?

A. 6.28

B. 12.56

C. 25.13

D. 50.24

E. 100.48

Answer: A

Q 2: Identify the form of the statement All City College students love math.

a)If a person loves math, then the person is a City College student.

b)If a person is a City College student, then the person loves math.

c)If the person is not a City College student, then the person does not love math.

d)None of the above

Answer: B

Q 3: Name the property of equality that can justifies the statement, If m1+25=180 , then m1=155 .

a) Symmetric

b) Transitive

c) Substitution

d) Subtraction

Answer: D

Q 4: Find the measures of the sides of the equilateral delta PQR if PQ=5x-7 and PR=2x+5.

a)39

b)4

c)12

d)13

Answer: D

Q 5:  All the parallelogram have

a) opposite angles that are supplementary.

b) diagonals that are congruent.

c) four congruent opposite sides that are congruent.

Answer: D


Additional geometry exam questions:


Q 1:  Name the property of the equality that justifies the statement, If m1+25=180 , then m1=155..

a) Symmetric

b) Transitive

c) Substitution

d) Subtraction

Answer:D

Q 2:  What symbol is used to indicate in writing the two line segments are identical?

a)  //       b)=   c) ?       d)?

Answer: D

Q 3: What is the principle basis of the inductive reasoning?

a) Postulate   b) Past Observation     c) Definitions      d) Theorems

Answer: B

Q 4:

Two circles both of radii 6 have exactly one point in common. If A is a point on one circle and B is a point on the other circle, what  is the maximum possible length for the line segment AB?

a) 12   b) 15     c)24    d)20

Answer: C

Geometry Congruence

Definition for geometry congruence:

In Geometry, we study different figure, their properties the relations between them. Every figure has its shape, size and Position. Given two figures you can easily decide whether they are of the same shape.

Figures having same shape and size  and angles are called congruent. Congruent means equal in all respects of the given figure. If two figures are congruent then it means that the size, shape and measurement of the first figure correspond to the size, shape and measurements of the second figure. I like to share this Symbol for Congruence with you all through my article.


Congruence for geometry:


If two persons compare the size shape of their fore-hands, they will do so by comparing thumb with thumb, fore-finger with fore-finger etc. Thus thumb corresponds to thumb. Similarly the two fore-fingers correspond to each other.

When we put a figure on another figure in such a way that the first figure covers the other figure completely i.e. all parts of the first figure completely cover the corresponding parts of the other. Then these figures will be said to be congruent to each other.

The relation property of two figures being congruent is called congruence. When two figures are congruent we denote them symbolically as. One figure ≅ second figure. The property of congruence, as you know is symbolically represented as ≅.


Important points in congruence of geometry:


Congruency in geometry means to be equal in all respect.
Two figures can be said to be congruent only when all parts of one are equal to the corresponding parts of the other.
The property of congruence of figures is called congruency.
If two line segments are congruent then they must have the same length.
If two angles are congruent then their measures must be equal.
Two triangles are congruent only
Two squares are congruent if they have the same side length.
Two rectangles are congruent if they have the same length and breadth.
Two circles are congruent if they have the same radius.
Sum of the three angles of a triangle is equal to 1800 therefore. if the measures of any two of them are given the third can be ascertained.

Coordinate Systems Geometry

Introduction of coordinate systems geometry:

Geometry is one of the basic and oldest topics in the mathematics. Geometry is used to study the characteristics and properties of the figure. Let every point on a straight line is associated with exactly one real number only. Rene Descartes, a mathematician who is the first man to introduce an algebraic geometry of coordinate systems. A plane is a collection of points in a space of the coordinate systems of geometry.Is this topic Lateral Area of a Rectangular Prism hard for you? Watch out for my coming posts.

About the coordinate systems:


Let us consider a sheet of the paper as the plane and draw two fixed perpendicular straight lines in that plane of the paper which will be intersecting at a point.

We always draw a straight line in horizontal direction and the other line will be a vertical line. These two lines which will meet at a common point and it is named as O and called the origin.

We represents that the horizontal as x–axis and the vertical line as y–axis.

The two lines which divides the plane into four parts namely quadrants. These quadrants are named as I quadrant, II quadrant, III quadrant and IV quadrant in geometry systems.

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Constructing co-ordinates system geometry:


Consider any point P in the plane. This point P lies in a quadrant.

From P, draw a straight line parallel to the y–axis to meet the x–axis at the point L, and draw a straight line parallel to the x–axis to meet the y–axis at the point M.

Let 'a' representing the point L on x–axis and 'b' representing the point M on y–axis.

If P lies on the x– axis, then b = 0.If a = 0, then a> 0 and b > 0. If a < 0 and b > 0, then P lies within the II quadrant.

If P lies within the III quadrant, then a< 0 and b < 0. If a > 0 and b < 0, then P lies within the IV quadrant If P is the point O, then a = 0 and b = 0. The number a is called the x–coordinate of the coordinate system of point P and the number b the y–coordinate of the coordinate systems of geometry.

The plane now is called the rectangular coordinate plane systems or the xy–plane.