Page 142 - New Medley 5 Semester 2

In the adjoining figure, angle XOY (in symbol, XOY or Y
YOX or O) is formed by two rays OX and OY at the Arm

point O. Therefore, OX and OY are two arms and O is
the vertex of XOY. O Angle
Vertex Arm X

Example 1: How many angles are formed in the given diagram?
Write them with their arms and vertices.

Solution: Two angles along with their arms and vertices are given

as follows:
A B
∠ABC; vertex B and arms BA and BC.

∠ BCD; vertex C and arms CB and CD. C D

EXERCISE 6.1

A. Observe the given diagram and name the following.
1. Line segments
C
2. Rays

3. Line(s)
A O B

B. Identify the pair of parallel lines and intersecting lines.

1. X 2. I J 3. M N
U
K L

Q V
Y
P

4. B 5. P 6. L

D

R N P
A

C S M
Q

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