Question

1)Find the missing angle measures in ΔABC.
A = 54°, B = ____°, C = 46°,



A. 80
B. 100
C. 180
D. 20
2)Find the missing angle measure in ΔABC.
A = 94°, B = 37°, C = ____°



A. 94
B. 37
C. 149
D. 49
3)Find the missing angle measure in ΔQRS.
Q = ____°, R = 60°, S = 20°

A.80
B.100
C.120
D.60

Answer 1

The three angles of a triangle add to 180 degrees.
Therefore, if you know two angles you can find the third angle.