Question

find the value of x in each of the following figures:​

Answer 1

Answer:

1) 100°

2) 36°

3) 18°

Step-by-step explanation:

1. 180° = x + 80°

180° - 80° = x

80° = x

2. 180° = 3x + 2x

180° = 5x

180° ÷ 5 = x

36° = x

3. 180° = 3x + 2x + 3x + 2x

180° = 10x

180° ÷ 10 = x

18° = x

Answer 2

Answer:

sum of angles of linear pair is 180

Step-by-step explanation:

1) x+80=180

x=180-80=100

2) 3x+2x=180

5x=180

x=180/5

x=36

3x=3×36=108

2x=2×36=72

3). 2x+3x+2x+3x=180

10x=180

x=18

2x=2×18=36

3x=3×18=54

36 ,54,36,54