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10
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Across 5. the bottom surface 6. a shape with two parallel sides 9. the edge of something 10. the distance around a shape 13. two lines that are the same distance apart always 14. a shape with four equal sides 15. two of these make a whole

Down 1. how you find out length , width or height 2. a shape with four sides, each pair being parallel 3. the distance from top to bottom of something 4. mathematics term shown as x 7. the amount of surface covered by a shape 8. a word for how wide something is 11. a shape with three angles and sides 12. a word for how long something is