Polygon Lesson

Polygons

What is a polygon?

A polygon is:

• a closed, flat shape with 3 or more sides.

The prefix of a polygon tells you how many sides it has.

• Tri = 3 sides

• Quad = 4 sides

• Penta = 5 sides

• Hexa = 6 sides

• Octa = 8 sides

Let's play "How Many Sides?"

Multiple Choice

An octagon has ___ sides.

• 4

• 6

• 8

• 5

Multiple Choice

A triangle has ___ sides.

• 4

• 3

• 8

• 5

Multiple Choice

A pentagon has ___ sides.

• 4

• 3

• 8

• 5

Multiple Choice

A hexagon has ___ sides.

• 6

• 3

• 8

• 5

Multiple Choice

A quadrilateral has ___ sides.

• 6

• 4

• 8

• 5

Let's play "Name that Polygon!"

Hint: Count the sides of each shape!

Multiple Choice

• hexagon

• quadrilateral

• pentagon

• triangle

Multiple Choice

• hexagon

• quadrilateral

• pentagon

• triangle

Multiple Choice

• hexagon

• quadrilateral

• pentagon

• triangle

Multiple Choice

• hexagon

• quadrilateral

• pentagon

• octagon

Multiple Choice

• hexagon

• quadrilateral

• pentagon

• octagon

What is a quadrilateral?

A quadrilateral is:

• a flat shape with 4 sides that are closed.

Quadrilaterals are classified by the number of parallel sides that they have.

Sides that are parallel will never intersect, or cross, each other.

Let's talk about the different kinds of quadrilaterals.

• trapezoid - a shape with at least one set of parallel sides.

• parallelogram - a shape with at least 2 sets of parallel sides.

• rhombus - a shape with 4 equal sides.

• square - a shape with 4 equal sides and 4 right angles.

• rectangle - a shape with 2 sets of parallel sides and 4 right angles.

Let's play "Name that Quadrilateral!"

Multiple Choice

• Square

• Parallelogram

• Rectangle

• Trapezoid

Multiple Choice

• Square

• Parallelogram

• Rectangle

• Trapezoid

Multiple Choice

• Square

• Parallelogram

• Rectangle

• Trapezoid

Multiple Choice

• Square

• Parallelogram

• Rectangle

• Trapezoid

Multiple Choice

• Rhombus

• Parallelogram

• Rectangle

• Trapezoid