| A | B |
|---|
| triangle | three sides |
| hexagon | six sides |
| square | four sides |
| pentagon | five sides |
| equilateral | a triangle with all sides and angles the same length |
| scalene | a triangle with all sides different |
| isosceles | a triangle with one pair of equal sides and one pair of equal angles |
| parallel | lines always the same distance apart |
| horizontal | lying down |
| vertical | standing up |
| angle | where two lines meet |
| perpendicular | at right angles to another line |
| acute | an angle less than 90° |
| obtuse | an angle more than 90°, less than 180° |
| right-angle | an angle of 90° |
| reflex | an angle which is more than 180° |
| heptagonal | seven sided |
| circle | 360° |
| radius | a line from the centre of a circle to the edge |
| diameter | a line from one side of a cricel to the other which goes through the centre |
| circumference | the perimeter of a circle |
| perimeter | the distance around the outside of a shape |
| area | the space enclosed by the perimeter |
