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Katarina [22]
3 years ago
15

1. i will give you brainliest if ur right

Mathematics
2 answers:
erma4kov [3.2K]3 years ago
7 0

Answer:

the answer of this question is......

I think 134

but I can't explain that

I'm so sorry

:-/

ArbitrLikvidat [17]3 years ago
4 0

Answer:

141

Step-by-step explanation:

This is a seven-sided pentagon. We can find the total sum of all the angles in the pentagon first.

Sum of angles in a pentagon = (7-2) × 180

                                                = 5 × 180

                                                = 900

∠B = 900 - 148 - 90 - 142 - 130 - 129 - 120

     = 141

Remember:

Formula of sum of angles in pentagon = (n-2) × 180 where n is the number of sides the pentagon has. Hope this helps :)

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