math

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Across
  1. 4. the and outside of a shape
  2. 5. a 90° angle
  3. 7. lines that meet at a right angle
  4. 10. a triangle of sides of all different lengths
  5. 11. point where to a more curves, lines, or line segments meet
  6. 12. a 2D diagram of an unfolded 3D shape
  7. 13. the measure of Regions in 3D space
  8. 14. a polyhedron comprising of an N-sided bace
  9. 15. a pair of perpendicular lines
Down
  1. 1. the total space in a 3D shape
  2. 2. surface of an object
  3. 3. a figure made up of line segments
  4. 6. a triangle that has two equal sides
  5. 8. a polyhedron formed by connecting a polygonal base and a point, called the apex
  6. 9. a polygon all of whose sides meet at right angles