“2D Shapes” Vocabulary in English

Let's see how many words we use to describe 2D shapes ...


1. square – 4 sides of equal length, 4 right angle corners

2. circle – 1 curved side, same distance across at any side (diameter)

3. equilateral triangle – 3 sides, 3 equal angles, 3 sides of equal length

4. right-angled triangle – 3 sides, 2 sides of equal length, 1 right angle

5. scalene triangle – 3 sides of different length, 3 different angles

6. oval – 1 curved side, different distance across at any side (diameter)

7. pentagon – 5 sides, the sum of the internal angles is 540o

8. isosceles triangle – 3 sides, 2 sides of equal length, 2 equal angles


9. hexagon - 6 sides, the sum of the internal angles is 720o

10. rectangle - opposite sides are equal length, 4 right angle corners

11. kite - no parallel sides, 2 pairs of adjacent equal length sides, 2 equal angles

12. rhombus - 2 pairs of parallel sides, 4 sides of equal length, also called a diamod

13. octagon - 8 sides, the sum of the internal angles is 1080o

14. quadrilateral - 4 sides, the sum of the internal angles is 360o

15. parallelogram - 2 pairs of parallel sides, opposite sides are equal length

16. trapezium - 4 sides, 2 parallel sides, the sum of the internal angles is 360o

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“2D Shapes” Vocabulary in English

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