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denis23 [38]
3 years ago
11

What is the interior angle sum of 31-gon

Mathematics
1 answer:
Vadim26 [7]3 years ago
4 0

Sum of Interior Angles = (Number of Sides -2) • 180 degrees

Sum of Interior Angles =  29 * 180

Sum of Interior Angles =  5,220

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Help me please just need this last one and I’ll be done please help me if you can
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Answer:

58°

Step-by-step explanation:

<u>Start with the equation</u> 2x + 2 + 90 = 148

<em>( I got the 90 from Angle B since it is a right angle.)</em>

<u>Combine like terms</u> 2x + 92 = 148

<em>( 90 and 2 didn't have variables so you could add them together.)</em>

<u>Subtract 92 from both sides</u> 2x + 92 = 148

                                                      -92   -92

<em>(The opposite of addition is subtraction.)</em>

<u>Now write out the new equation</u> 2x = 56

<u>Divide both sides by 2</u> \frac{2x}{2} = \frac{56}{2}

<u>You'll end up with...</u> x = 28

<u>To find the measure of angle BAC, plug in 28 where the x value is</u> 2(28) + 2

<u>This gives you the answer</u> 58°

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2 years ago
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Lena [83]

Answer:

Hey buddy, here is your answer. Hope it helps you.

Step-by-step explanation:

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