Question

Alex drew a circle with right triangle PRQ inscribed in it as shown below.


If the measure of arc QR is 80°, what is the measure of angle PQR? (4 points)
40°
50
70°
80°

Answer 1

Please help

Answer 2

all corners of a triangle ad to 180 degrees.. a right corner is 90degrees
180-90-80= your answer

Answer 3

isn't the 80 degrees an arc?

Answer 4

Is it safe to assume it's a 30 60 90 triangle?

Answer 5

The answer can't be 10.

Answer 6

isn't the are of a corner of a triangle the same as the angle of the triangle? My english isn't perfect so if I'm wrong I'm sorry..

Answer 7

also, why wouldn't it be 10?

Answer 8

and of course, I mean the same as the angle of the corner not the angle of the triangle...