Question

ABCD is a cyclic quadrilateral angle a = angle b = 90 degree find angle c and angle d​

Answer 1

Step-by-step explanation:

given angle a = angle b =90°

in an cyclic quadrilateral sum of opposite angle is 180°

so angle a + angle d=180°

angle a= 90°

90° +angle d =180°

angle d=90°

similarly

angle c =90°

hope it helps

Answer 2

Step-by-step explanation:

given angle A = angle B =90°

in an cyclic quadrilateral sum of opposite angle is 180°

so angle A + angle D=180°

angle A = 90°

90° + angle D =180°

angle D = 90°

similarly, hence  

the angle C =90°

guys, hope it helps u..