Question

Remote interior and exterior angles in triangles

Answer 1

∠2 = 60°

Explanation:

The sum of interior angles in a triangle is equal to 180°.

To find the measure of the missing angle, we can use the following equation based on above mentioned information:

63° + 57° + ∠2 = 180°

• Add the given measures.

120° + ∠2 = 180°

• Subtract 120° from both sides.

∠2 = 60°