2D shapes

5. a triangle with two equal sides
7. the distance from the centre to the edge of a circle
8. a quadrilateral which has only one pair of parallel sides
11. the distance from side-to-side
12. an instrument with two arms, one sharp and one with a pencil that can be used to draw circles
14. a tool used to rule straight lines and measure distances
15. a flat shape with four straight sides
18. a 2D shape made by drawing a curve that is always the same distance from a centre
21. triangle a triangle with all three sides of equal length

1. a plane closed shape (2 dimensional) with straight lines
2. a three-sided polygon
3. a triangle that has a right angle
4. an instrument used in measuring of drawing angles
6. a triangle with all sides of different lengths
9. a quadrilateral where opposite sides are equal in length and parallel
10. the distance around the edge of a circle
13. a quadrilateral which has all sides of equal length and each interial angle a right angle
16. a quadrilateral where all sides have equal length
17. a straight line going through the centre of a circle connecting two points on the circumference
19. a quadrilateral where all interior angles are 90 degrees and opposite sides are parallel and of equal length
20. a quadrilateral whose four sides cn be grouped into two pairs of equal-length sides that are adjacent to each other