Question

एक चतुर्भुव के तीन कोण 90, 90° एवं 75- है तो चौथा
कोण होगा:​

Answer 1

Sum of all angles is equal to 360 degree.

Angle A = 90; Angle B = 90; angle C = 75 ; Angle D = ?

90 + 90 +75 + angle D = 360

255 + Angle D = 360

angle D = 360-255 = 105 degree