Question

S
PR
Solution. Since ZAOC and <COB together
straight angle, they constitute a linear
pair .
0
Identify the following in
the figure given below.
a Five pairs of adjacent
angles
b Four linear pairs
c Two pairs of vertically
opposite angles
P Р
Thus, x + (2x + 6°)= 180°
x + 2x + 6° = 180°
3r = 180° -6°
= 1740
Example 2: Find the value of x in the following
figures.
3x
174°
3
3
x= 58°
Thus,
LCOB = 58°
x
3x
4x
b
Exercise 10A ..
1 Identify the following pairs of angles as complementary, supplementary, or equal.
a 77º and 103°
b 177º and 177° e 7º and 173°
d 3° and 87°
e 45° and 45°
f 90° and 90°
following figures​

Answer 1

Answer:

FIRSTLY I REALLY DONT KNOW WHAT YOU WANT TO ASK. The first two questions seemed to be already solved, so I will answer the 3rd one.

Ex. 10A -

Q.1] Ans-

a) 77º and 103° - supplementary angles

b) 177º and 177° - equal angles

c) 7º and 173° - supplementary angles

d) 3° and 87 - complementary angles

e) 45° and 45° - equal angles and complementary angles

f)  90° and 90° - equal angles and supplementary angles

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