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Across 1. SI unit of measure based on 10s 6. The length of two points on the circle that passes through the centre 8. A guess that is close to the actual value, an approximate 11. Shortened, contracted form, decreased length 12. A four sided figure with exactly two lines parallel

Down 2. Distance around a circle 3. The distance around a closed shape. Length of a boundary 4. Things compared have ratios or multiples 5. The S in the mnemonic for order of operations BEDMAS stands for 7. Get rid of, remove, leave out, omit 9. Number or variable that are multiplied to get an answer. Example, 2 and 4 are this of 8 10. A 3D shape with a polygon base and triangular faces that meet at a common point.