Question

STOP is rectangle with angle STP=50 degree determine anglePTO

Answer 1

As STOP is a rectangle
So, angle S= angle T=angle O= angle P = 90°
Now, angle STO = 90°
angle STP+angle PTO = 90°
angle PTO=90° - 50°= 40°

Answer 2

In rectangle all angles are equal .
angle S = angle T= angle O = angle P = 90 ° ---- angles r 90°
since angles T = angle STP + angle PTO
90 = 50 + angles PTO
90 - 50 = angle PTO

angle PTO = 40 °

i hope it was hjelpful