Question

In the given figure, intersect at O. (a) Determine y, when x = 60°. (b) Determine x, when y = 40°.

Answer 1

Answer:

60 degree degree

answer

Answer 2

Answer:

(a) Determine y, when x = 60°

2x = 2×60° = 120°

so by use linear pair equation [ i.e sum of linear pair=180°]

2x + y = 180°

120° + y = 180°

y = 180° - 120°

y = 60°

(b) Determine x, when y = 40°.

by use linear pair equation ,

2x + y = 180°

2x + 40° = 180°

2x = 180°-40°

2x = 140°

x = 140°/2

x = 70°

hope it helps you :)