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In this lesson, we will learn how to count the edges and vertices of polygons in order to name them as triangles, quadrilaterals, pentagons, or hexagons.

Q1:

Anthony made a quadrilateral using 4 toothpicks. He now wants to change the quadrilateral into an octagon. How many more toothpicks does he need?

Q2:

Fares made a quadrilateral using 4 toothpicks. He now wants to change the quadrilateral into a pentagon. How many more toothpicks does he need?

Q3:

How many edges does a hexagon have?

Q4:

Maged made a quadrilateral using 4 toothpicks. He now wants to change the quadrilateral into a hexagon. How many more toothpicks does he need?

Q5:

How many vertices does the shape have?

Q6:

Identify the following two-dimensional figure.

Q7:

What is the name of a 5-sided polygon?

Q8:

How many vertices are there in a triangle?

Q9:

How many vertices are there in a hexagon?

Q10:

Which polygon has three sides?

Q11:

What is the name of a 6-sided polygon?

Q12:

What is the name of this shape?

Q13:

What is the name of a polygon that has 3 sides and 3 angles?

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