Math Quarterly
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What is a 5 sided figure called?
Pentagon

What is a 6 sided figure called?
Hexagon

What is a 7 sided figure called?
Heptagon/ Septagon

What is a 8 sided figure called?
Octagon

What is a 9 sided figure called?
Nonagon

What is a 10 sided figure called?
Decagon

Regular Polygon
All equal sides and Angles

Equilateral Triangle
All Sides are equal

Isosceles Triangle
2 Sides of the Triangle are equal

Scalene Triangle
All sides of the triangle have different measurements

What is the perimeter of a square if one side is 4 inches?
16 Inches

What is the perimeter of an equilateral trinagle if one leg is equal to three centimeters?
Nine Centimeters

What is the perimeter of an isosceles triangle whose base is six inches and one of the sides is 10.5 inches?
27 Inches

What is the perimeter of a Decagon with a side of 2.5 cm?
25 cm

What is the perimeter of a rectangle whose width is 5 feet and its length is 1 foot less?
18 Feet