Geometry exam

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Across
  1. 5. a figure with no sides or corners
  2. 9. V=1/3hπr²
  3. 10. two lines that meet or intersect each other at right angles
  4. 11. a polygon figure with three sides and three angles
  5. 13. a measure of the steepness of a line.
  6. 14. a type of triangle where all the sides are equal
  7. 15. circumference divided by two pie
  8. 17. the square of the length of the hypotenuse of a right triangle equals the sum of the squares of the lengths of the other two sides.
  9. 18. a type of triangle with a right angle.
  10. 21. a measure of three-dimensional space
Down
  1. 1. when a shape can become the other after a resize, flip, slide or turn.
  2. 2. an infinitely long object with no width, depth, or curvature.
  3. 3. line moving in the same direction but always the same distance apart.
  4. 4. area the outside part or uppermost layer of something
  5. 6. is a point located on a segment that bisects it.
  6. 7. two times the radius
  7. 8. ph+2B
  8. 12. 2/3 πr3
  9. 16. V=4/3πr3
  10. 19. is the branch of mathematics dealing with the relations of the sides and angles of triangles and with the relevant functions of any angles.
  11. 20. a one-dimensional locus of points that forms half of a circle.