Question

Find the values of a in each of the following figures.​ PLEASE ANSWER THE QUESTION IF YOU KNOW THE ANSWER IF YOUR ANSWER IS IRRILATIVE I'LL REPORT THAT ANSWER ​

Answer 1

Step-by-step explanation:

4.a) ⇒ Sum of all angles of quadrilateral = 360⁰

⇒ a⁰ + 2a⁰ + 90⁰ + 90⁰ = 360⁰

⇒ 3a⁰ + 180⁰ = 360⁰

⇒ 3a = 180⁰

⇔ a = 60⁰ Ans..

b.) ⇒ ( a + 10 )⁰ + 80⁰ + ( a + 20 )⁰ + 3a⁰ = 360⁰

⇒ 5a + 110⁰ = 360⁰

⇒ 5a = 250⁰

⇔ a = 50⁰ Ans....