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Gennadij [26K]
3 years ago
8

What is the proportion in the first question?

Mathematics
1 answer:
Igoryamba3 years ago
4 0

If two triangles are similar, the correspondant sides are in proportion. So, the proportion is

15\div 10 = 18 \div 12 = x \div 6

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A regular polygon
olga55 [171]

Answer:

3.6° = ext. angle

Step-by-step explanation:

For the shape to be a regular polygon, all interior angles must be congruent.

We can find every interior angle by using the formula:

\frac{180(n-2)}{n}

\frac{180(100-2)}{100}

\frac{180(98)}{100}

\frac{17640}{100}

176.4 = each int. angle

We also know that int. and ext. angles are supplementary!

180 = 176.4 - x

3.6° = ext. angle

5 0
3 years ago
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Step-by-step explanation:

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