AB || DE , ∠ABC = 122 degrees and ∠CDE = 108 degrees . Find Reflex ∠BCD

Question

Answer 1

B=122

D=108

C=B+D-180 = 230-180= 50

C=50 degrees

extend AB to the right

extend CD down to intersect extended AB at say F

to create a triangle BCF

its 3 angles sum to 180

B=180-122 = 58

F = 180-108 = 72

C = 180-58-72 = 180-130 = 50 degrees