AI generatedGeometry and measuresKey Stage 3

Naming polygons

Naming polygons.

  • Use the stated properties and diagram markings, rather than judging by appearance.
  • Matching ticks mean equal lengths; matching arrows mean parallel lines.
  • A small square marks a right angle. Keep labels horizontal and include units.

Example 1

Name this polygon by counting its sides.

Regular polygonDiagram not to scale
Triangle (3 sides).

Count every straight side exactly once.

Example 2

Name this polygon by counting its sides.

Regular polygonDiagram not to scale
Quadrilateral (4 sides).

Count every straight side exactly once.

Your turn

Question 1

Name this polygon by counting its sides.

Regular polygonDiagram not to scale
Check answer
Pentagon (5 sides).

Count every straight side exactly once.

Question 2

Name this polygon by counting its sides.

Regular polygonDiagram not to scale
Check answer
Hexagon (6 sides).

Count every straight side exactly once.

Question 3

Name this polygon by counting its sides.

Regular polygonDiagram not to scale
Check answer
Octagon (8 sides).

Count every straight side exactly once.

Question 4

Name this polygon by counting its sides.

Regular polygonDiagram not to scale
Check answer
Decagon (10 sides).

Count every straight side exactly once.

Question 5

Name this polygon by counting its sides.

Regular polygonDiagram not to scale
Check answer
Dodecagon (12 sides).

Count every straight side exactly once.

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