Question

3. Find the measure of the angle indicated.

Answer 1

∠ D = 94°

Explanation:

the exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

∠ CBY is an exterior angle of the triangle, then

∠ C + ∠ D = ∠ CBY , that is

49° + ∠ D = 143° ( subtract 49° from both sides )

∠ D = 94°