## Four-sided Figures: Finding Unknown Angles - Part 2

#### 1. Find the unknown marked angles in the trapezium below.

∠p + ∠s = 180°

∠p = 180° − 62° = 118°

∠p = 180° − 62° = 118°

The sum of a pair of angles between two parallel lines is 180°.

From the data given, it is not possible to find ∠r.