Answer:
because it has the same angle
Step-by-step explanation:
You need to find one of the following proves:
1) The firs one is mentioned - ∡MRQ = ∡NQR
2) QR is common for both triangles
3) PQ = PR -> that means triangle is equilateral and angles ∡PQR = ∡QRP
Now you now 2 angles and 1 side are the same.
Using ASA (angle, side, angle) that's prove both triangles are congruent.
73,780
2,108 x 35 = 73,780
the measure of the exterior angle is 87 degrees.
