Lesson Worksheet: Sides of 2D Shapes Mathematics • 1st Grade

In this worksheet, we will practice how to identify and count sides of 2D shapes.

Q1:

Amelia has built a triangle by sticking 3 sticks into 3 clay balls.

Can I build a square with these?

  • AYes
  • BNo

Q2:

Jacob has built a square with 4 sticks.

How many sticks does he need to build a triangle?

Q3:

Which shape can I build with these 5 sticks?

  • A
  • B
  • C

Q4:

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

Q5:

How many sides does the shape have?

Q6:

Pick the shape that Elizabeth is describing.

  • A
  • B
  • C
  • D

Q7:

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

Q8:

How many sides does a rectangle have?

Q9:

How many sides does this shape have?

Q10:

Which of the following shapes has four sides?

  • A
  • B
  • C
  • D

Q11:

How many sides (edges) does this shape have?

Q12:

Which shape has 5 sides?

  • A
  • B
  • C

Q13:

True or False: Shape A has more edges than shape B.

  • ATrue
  • BFalse

Q14:

True or False: Shape A and shape B have the same number of edges.

  • ATrue
  • BFalse

Q15:

How many edges are there in the given shape?

Q16:

Which of the given shapes has 4 edges?

  • A
  • B
  • C
  • D

Q17:

How many edges are there in the given shape?

Q18:

How many edges are there in the given shape?

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