Question

Help on this question?

Answer 1

• x = 9°
• 8x = 72°
• 12x = 108°

Explanation:

Where a transversal crosses parallel lines, consecutive exterior angles are supplementary:

8x +12x = 180°

20x = 180° . . . . . . . collect terms

x = 9° . . . . . . . . . divide by 20

8x = 8(9°) = 72°

12x = 12(9°) = 108°