Question

□ABCD is cyclic. If ∠B= 105°, then find the measure of ∠D?​

Answer 1

Answer:

We know that

In cyclic quadrilateral the sum of two opposite angle is 180°

So,AngleB+AngleD =180° (opposite angle)

105+AngleD=180°

AngleD=180°-105°

Angle D = 75°

Answer 2

Step-by-step explanation:

<A=4y+20

<B=3y-5

<C=4×

<D=7×+5

we know that in cyclic quadrilateral ,

sum of of the opposition angles is 180

<A+<C=180

and <B+<D=180

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