Both angles are straight angles. Straight angles measure 180°.
1) One of the angles is 53.7°. The other angles is equal to:
[tex] 180 - 53.7 [/tex]
Subtract
[tex] 180 - 53.7 = 126.3 [/tex]
Angle = 126.3°
2) One of the angles is 115.2°. The other angles is equal to:
[tex] 180 - 115.2 [/tex]
Subtract
[tex] 180 - 115.2 = 64.8 [/tex]
Angle = 64.8°
