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:
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
Hope it helps, Consider marking as the brainliest?