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Grade 4 Maths: 2D shapes poster

A one-page CAPS Grade 4 Maths poster on 2D shapes (Shapes and space), with the key ideas, key words and a tip to remember.

CAPS Grade 4MathsShapes and spaceFree
Maths · Grade 4 · Shapes and space
2D shapes

1Sides and corners

A 2D shape is flat. Its sides are lines. A corner is where two sides meet.

Example

This octagon has 8 sides and 8 corners.

2Names of shapes

  • 3 sides: triangle
  • 4 sides: quadrilateral, such as a square, rectangle or kite
  • 5 sides: pentagon
  • 6 sides: hexagon
  • 8 sides: octagon

3Straight and curved

  • A polygon has only straight sides.
  • A circle has one curved side and no corners.
Example

A triangle has 3 straight sides.
A circle has no straight sides.

4Squares and rectangles

  • Square: 4 equal sides and 4 right angles.
  • Rectangle: opposite sides equal and 4 right angles.
  • A right angle is a square corner.

5Regular and irregular

A regular shape has all sides equal and all angles equal. An irregular shape does not.

Example

A square is regular.
A rectangle that is not a square is irregular.

6Word clues

The start of a shape’s name tells you the number of sides.

Example

tri = 3, quad = 4, penta = 5
hexa = 6, octa = 8

Key words

side
a straight line or curve that forms the edge of a shape
corner
the point where two sides meet
right angle
a square corner
regular
all sides equal and all angles equal
polygon
a closed shape with straight sides
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