Question

5. In each of the following figures, AB II CD.
Find the value of the unknown.​

Answer 1

Step-by-step explanation:

I) First draw a line from Ac to Cd and it becomes a Pentagon which has 540degrees.

So subtract it by making 128 + 92 + a + 90 + 90 = 540.

400 + a = 540

a = 140 degrees.

ii) (4b-10)+(2b-2) = 180

6b-12= 180

6b = 192

b = 192/6

b= 32 degrees.

Hope it helps you.