I’ll give brainly The measure of ABC = 180°.
1 answer:
Answer:
y=37
Step-by-step explanation:
the addition of the 3 angles is 180°
then 40 + y +29 +2y = 180
69 + 3y =180
3y = 180 -69
3y= 111
y =111 ÷ 3
y = 37
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