Page 150 - Math Skill - 5

12 Geometryy
12
Geometr

Learning Outcomes

� Plane � Types of Angles � Triangle and their Classification
� Angles � Drawing Angle Using a Protractor � Properties of Triangles
� Interior and Exterior of an Angle � Pair of Angles � Circle
� Comparison of Angles � Types of Lines � Drawing a Circle of Given Radius
� Measuring Angles

Boot-Up

A. Identify the line, line segment and ray in the given figure. 1. Line: _________

2. Line segment: _________
A P Q R B 3. Ray: _________

B. Name the radius, diameter and chord of the given circle.
4. Radius: _________
A
O Q 5. Diameter: _________
6. Chord: _________
B
P

Let’s first revise the difference between a line segment, a line and a ray before learning further.

S. No Line Line Segment Ray

1. No end points are there. Two end points are there. It has only one end point.

2. It has no definite length. It has a definite length. It has no definite length.

It cannot be drawn, it can It cannot be drawn. It can only
3. only be represented on a It can be drawn on a paper. be represented on a paper.
paper.

4. Symbol AB represents a Symbol AB represents a Symbol AB represents a ray

line with A and B being line segment with A and B with A being the end point
the two points on the line. being the two end points. and B being a point on the ray.

A B A B A B