Question

prove that every angle of rectangle measure 90​

Answer 1

Answer:

as the sum of angles should be 360 so,when we multiply

90*4sides of triangle its 360

Answer 2

Answer:

Opposite side of a rectangle are equal. Therefore, angle A is equal to angle D and angle B = Angle C. Adjacent angles and sides are equal. angle ACD = DBA. Straight lines = 90° and all sides of a rectangle are straight. Sum of angles of a rectangle is 360°. So 90 × 4 = 360°