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\\November 3, 2023 11:36 AM Surender Prajapati Proof 5 Reader _________________________ Date: ___________________74
Interior and Exterior of an Angle
Consider an angle ∠AOB shown in the figure. Take a point P B
on ray OA and a point R on ray OB . We say that the points P R
and R lie on ∠AOB.
Mark two points M and N inside the ∠AOB and two points S S M
and T outside the ∠AOB. N
We say that M and N lie in the interior of ∠AOB and S and T
lie in the exterior of ∠AOB. O P A
The points lying inside the angle form the interior of the T
angle.
The points lying outside the angle form the exterior of the angle.
Practice Time 7B
1. Which of the following figures shows an angle?
(a) (b) (c) (d)
2. Name the following angles.
(a) (b) (c) M (d)
P X Z E
N
L
F G
Q R Y
3. Complete the following table.
Angle Arms Vertex Name of the angle
P
(a) T
O
S
(b) U
N
T
(c)
O P
142 Mathematics-5
