Question

Find the angle measure of angle E in Triangle DEF if angle D is 34 degrees & angle E is 117 degrees.

Answer 1

m∠E = 29°

Explanation:

The sum of the measure of the interior angles in a triangle is 180°

m∠D + m∠E + m∠F = 180°

34° + m∠E + 117° = 180°

m∠E = 29°