How many sides does a regular polygon have if given one interior angle

How many sides does a regular polygon have if given one interior angle

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

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The video tutorial explains how to determine the number of sides in a regular polygon when given the measure of one interior angle. It introduces the formula for calculating the measure of an interior angle and demonstrates solving for the number of sides using algebraic manipulation. The tutorial concludes with a recap of the steps and a brief discussion on the properties of a dodecagon.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for the measure of one interior angle of a regular polygon?

n * 180 / (n - 2)

(n - 2) * 180 / n

180 / (n - 2)

n * (n - 2) / 180

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in solving the equation 150 = (n - 2) * 180 / n for n?

Subtract 180 from both sides

Multiply both sides by n

Add 360 to both sides

Divide both sides by 150

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

After applying the distributive property, what equation do we get?

150n = 180n - 360

150n = 180n + 360

150n = 360 - 180n

150n = 360 + 180n

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final value of n when solving the equation for the polygon's sides?

10

13

11

12

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the name of a polygon with twelve sides?

Decagon

Undecagon

Dodecagon

Tridecagon