Question

plz fast. mental maths. class 7​

Answer 1

Answer:

1.

a) 70°

b)both side 45°

c)4x= 20×4

=80°

2x= 20×2

=40°

3x= 20×3

60°

2. 1=3

4=2

5=7

6=8

Answer 2

Answer:

1...a) ...x= 70°

b)...x= 45°

c)....x=20°

2.... angle 1 = angle 3

angle 2= angle 4

angle 5= angle 7

angle 6= angle 8

3.....a)....x = 10°

b)....x= 5°

4......a)....60°

b)....36°

c)....45°

........hope helps you.....