Understanding Polygons in Mathematics

What is a polygon?

• A polygon is a three-dimensional shape.

• A polygon is an open figure with straight lines.

• A polygon is a closed figure with straight sides.

• A polygon is a figure with curved sides.

Tags

CCSS.2.G.A.1

How many sides does a triangle have?

• 4

• 5

• 2

• 3

Tags

CCSS.2.G.A.1

Define a quadrilateral.

• A quadrilateral is a polygon with five sides.

• A quadrilateral is a shape with three sides.

• A quadrilateral is a type of triangle.

• A quadrilateral is a polygon with four sides.

Tags

CCSS.2.G.A.1

What is the sum of the interior angles of a pentagon?

• 720 degrees

• 540 degrees

• 180 degrees

• 360 degrees

Name a polygon with eight sides.

• hexagon

• pentagon

• decagon

• octagon

Tags

CCSS.2.G.A.1

What do you call a polygon with all sides equal?

• Isosceles polygon

• Scalene polygon

• Equilateral polygon

• Quadrilateral

Tags

CCSS.2.G.A.1

How many diagonals does a hexagon have?

• 15

• 9

• 6

• 12

What is the difference between a regular and irregular polygon?

• A regular polygon can only have three sides; an irregular polygon can have more.

• A regular polygon is always a triangle; an irregular polygon can be any shape.

• A regular polygon has varying side lengths; an irregular polygon has equal sides.

• A regular polygon has equal sides and angles; an irregular polygon does not.

Tags

CCSS.2.G.A.1

Calculate the exterior angle of a regular octagon.

• 45°

• 30°

• 90°

• 60°

What is the formula for the sum of interior angles of a polygon?

• (n - 3) * 180

• n * 180

• (n + 2) * 90

• (n - 2) * 180