Question

∠3 and ∠4 are supplementary angles. Given m∠3=116°, find m∠4. m∠4= °

Answer 1

Supplementary angles are angles that add up to 180 degrees.

m<3 + m<4 = 180 degrees

116 + m<4 = 180 degrees.

Subtract 116 from both sides.

m<4 = 64 degrees