Question

Q 12 plz anyone can solve

Answer 1

A, B, C, D form a complete circle which is 360 degrees.

Add all 4 together:

A + 2A + 4A+ 3A = 360

10A = 360

Divide both sides by 10:

A = 360/10 = 36

Now we know A so can calculate the rest:

B = 2A = 2(36) = 72 degrees

C = 4A = 4(36) = 144 degrees

D = 3A = 3(36) = 108 degrees