Question

plz give me answer​

Answer 1

Answer:

Assume E is the intersection point of AB and DS.

Step-by-step explanation:

AB // CD, hence angle AED = angle EDC

=> angle AED = angle ABR ( = 1/2 of angle ABC)

=> DP // BR

The same for AR and CP, so we have AR//CP

Hence, RQRS is a parallelogram (1)

Besides, angle SAD = 1/2 of angle DAB

angle SDA = 1/2 of angle CDA

So, angle SAD + angle SDA = 1/2 (angle DAB + angle CDA) = 90 degree

So, angle DSA = 90 degree (2)

From (1) and (2) => PQRS is a rectangle