Maths Library

Identifying 2D Shapes: Grade 1 math

This topic covers identifying and classifying common two-dimensional shapes by their properties. The worksheet practises recognising circles, triangles, quadrilaterals, and regular polygons.

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What this covers

Identifying 2D Shapes is taught in Grade 1 (age 6 to 7) as a main teaching focus. It sits in the Geometry strand.

Worked example

How many sides does a regular hexagon have

  1. Recall that a hexagon is a polygon named from the Greek prefix hex- meaning six
  2. Count or state the number of straight sides

Answer: 6

Difficulty scale

The sheet generator offers five difficulty settings for this topic.

  1. Recognising basic shapes: circle, square, triangle, rectangle
  2. Identifying pentagons, hexagons, and octagons
  3. Counting sides and vertices on regular 2D polygons
  4. Distinguishing quadrilaterals: rhombus, parallelogram, trapezium
  5. Classifying polygons based on parallel sides and equal angles

Common mistakes

  • Thinking a shape changes name when rotated (e.g. calling a rotated square a diamond)
  • Confusing vertices (corners) with edges or sides

Curriculum links

Indicative matches to Common Core State Standards. Check wording and codes against the official document.

  • 1.G.A.1 Distinguish between defining attributes and non-defining attributes of two- and three-dimensional shapes.

Sample sheet and answers

Six questions at the level's usual difficulty. Open the editor to change, add or regenerate any of them.

Identifying 2D Shapes

Grade 1 math

Qs
6
Marks
6
NameDateScore / 6
1.
Name a shape with 4 sides.
[1]
2.
How many sides does this shape have?
[1]
3.
Name a shape with 3 sides.
[1]
4.
Name a shape with 5 sides.
[1]
5.
How many sides does this shape have?
[1]
6.
How many sides does this shape have?
[1]

Answer key

  1. square or rectangleA shape with 4 sides is called a quadrilateral, such as a square or rectangle
  2. 4Count the straight edges: 4
  3. triangleA shape with 3 sides is called a triangle
  4. pentagonA shape with 5 sides is called a pentagon
  5. 6Count the straight edges: 6
  6. 3Count the straight edges: 3