Question

help please struggling

Answer 1

Explanation:

There are just two triangles stuck together , here. Don't let that throw you off your game :DD

solve for a

then b

for a it's 180 = 2*36 +a ( b/c of the red marks , again)

180 = 72 +a

180-72 =a

108 = a

Now solve for b

180 = 2b + 42 (red marks tell us this formula works, again)

180-42 = 2b

138 =2b

138/2 =b

69 = b

Do you see , now, how I get those formulas???