geometry

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Across
  1. 4. A triangle that has 2 equal sides
  2. 7. the lateral area of a ___ is 2πrl
  3. 8. What is the shape of the earth?
  4. 9. Comparison of 2 numbers
  5. 12. Ice cream
  6. 13. What type of lines never intersect
  7. 15. The united states is in the Northern
Down
  1. 1. You fly it when it is windy
  2. 2. Measurement of the steepness of a line
  3. 3. What shape is half of a moon?
  4. 5. This theorem is used for a right triangle
  5. 6. Triangle with 90 degree angle
  6. 7. A shape with all points equidistant from its center
  7. 10. Half of a diameter
  8. 11. The amount of space in a shape
  9. 14. Portion of a circle between 2 points