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41 votes
41 votes
PLEASE HELP!!
Please also explain your answer so I'll know how to solve next time

PLEASE HELP!! Please also explain your answer so I'll know how to solve next time-example-1
User Kayra
by
2.7k points

1 Answer

16 votes
16 votes

Answer:

D=121

Explanation:

First fin the angles on the inside using the outer angles. Always use 180 as your main number to subtract from. 180-131 = 49 180-108= 72 72+49=121

180-121=59 180-59=121

Or an easier way is to see if your outer angles equal up to 360

So 131+108=239

360-239=121

And there's your solution.

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