# Worksheet: Naming Polygons

In this worksheet, we will practice counting the edges and vertices of polygons in order to name them as triangles, quadrilaterals, pentagons, hexagons, or octagons.

**Q1: **

What is the name of a 5-sided polygon?

- Aquadrilateral
- Bhexagon
- Ctriangle
- Dpentagon

**Q2: **

What is the name of a 6-sided polygon?

- Apentagon
- Bquadrilateral
- Ctriangle
- Dhexagon

**Q3: **

How many vertices are there in a triangle?

**Q5: **

Which polygon has three sides?

- A(a)
- B(b)
- C(d)
- D(c)

**Q6: **

What is the name of this shape?

- Aoctagon
- Bpentagon
- Cquadrilateral
- Dtriangle
- Ehexagon

**Q7: **

Identify the following two-dimensional figure.

- Aquadrilateral
- Bpentagon
- Coctagon
- Dhexagon
- Etriangle

**Q8: **

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

**Q9: **

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

**Q10: **

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

**Q11: **

A triangle is a polygon that has sides and angles.

- Atwo, three
- Bthree, four
- Cthree, three
- Dfour, four

**Q12: **

How many vertices are there in a pentagon?

**Q13: **

What is the name of a 4-sided polygon?

- Apentagon
- Bhexagon
- Ctriangle
- Dquadrilateral

**Q14: **

What is the name for a 3-sided polygon?

- Aquadrilateral
- Bpentagon
- Chexagon
- Dtriangle

**Q15: **

Matthew made a triangle using 3 toothpicks. He now wants to change the triangle into an octagon. How many more toothpicks does he need?

**Q16: **

True or false? A hexagon has fewer sides than an octagon.

- Atrue
- Bfalse

**Q18: **

How many more sticks does Matthew need to change this hexagon into an octagon?

**Q19: **

Peter made a pentagon using 5 toothpicks. He now wants to change the pentagon into an octagon. How many more toothpicks does he need?

**Q20: **

Which two vertices can be joined together to form two polygons with the same number of sides?

- A
- B
- C
- D

**Q22: **

Which two vertices can be joined together for form two polygons; one with three sides and the other with seven sides?

- A
- B
- C
- D

**Q24: **

How many 6-sided polygons are on the clown?

**Q25: **

How many 10-sided polygons are on the clown?