Question

In Figure T, find ∠B if ∠A = 30°. (Hint: First find the value of ∠GHC by using the sum of the interior angles of a triangle. Find ⦞ DFH and FHD by using the rule about supplementary angles. Then you should be able to find ∠B.)

Question 3 options:

Answer 1

B = 45

Explanation:

GHC= 90-30 = 60

-> GHD= 180-60= 120

DFH = 180-165 = 15

B= 180-15-120=45