Question

this is the question. if anyone give me the correct answer I will mark the answer as brainlist ​

Answer 1

Step-by-step explanation:

=∠A+∠B+∠C+∠D=360⁰ .....(1)

In △APB,

=∠APB+ ∠A/2 + ∠B/2 =180⁰

=2∠APB+∠A+∠B=360⁰

=∠A+∠B=360⁰−2∠APB .......(2)

B .......(2)Substituting (1)and(2)

=360⁰ −2∠APB+∠C+∠D=360⁰

=2∠APB=∠C+∠D