Question

Determine the measure of angles 1, 2 and 3.

Measure of 211
Measure of 22
O
Measure of 23
22°
479
1
262
3

Answer 1

1) 40

2) 118

3) 71

Explanation:

3) is the easiest. All interior angles add to 180

Angle 3 = 180 - 62 - 47

Angle 3 = 71

2) Angle 2 is on the same straight line as 62 and together they equal 180

Angle 2 = 180 - 62

Angle 2 = 118

1) Using 22, Angle 2 and the knowledge that all interior angles equal 180

180 - 22 - 118 = Angle 1

40 = Angle 1