Geometry

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Across
  1. 1. an angle whose measurement is more than 0º and less than 90º
  2. 5. a plane figure with at least three straight side and three angles
  3. 7. a polygon with seven straight sides and seven angles
  4. 10. the sum of the areas of all the faces of a solid
  5. 13. an angle whose measurement is more than 90º and less than 180º
  6. 16. two or more circles that have the same center point
  7. 17. an angle whose measurement is exactly 90º
  8. 18. a line that intersects a circle at two points
  9. 19. two lines that intersect to form a right angle
  10. 21. a triangle with exactly two congruent sides
  11. 23. the height of a right triangle to the hypotenuse
  12. 25. to be both equilateral and equiangular
  13. 26. the number of cubic units contained in a solid
  14. 27. an angle whose measurement is exactly 180º
  15. 29. two angles with a common vertex and a common side between them
  16. 31. lines that do not intersect
Down
  1. 1. the area between two concentric circles which lie in the same plane
  2. 2. a point in the exact middle of a line segment
  3. 3. a segment that connects two points on the circle
  4. 4. angles whose sum is 90º
  5. 6. a segment, line or ray that divides an object in half
  6. 8. a theorem that states that in a right triangle, the sum of the squares of the legs is equal to the square of the hypotenuse
  7. 9. a triangle with no congruent side
  8. 11. angles whose sum is 180º
  9. 12. a segment from the center of a regular polygon at right angles to any of its sides
  10. 14. a triangle with three congruent angles
  11. 15. a triangle with three congruent sides
  12. 20. a round plane figure whose boundary consists of points equidistant from a fixed center
  13. 22. having the same shape and size
  14. 24. the perpendicular distance from a vertex to the opposite side
  15. 28. pairs of opposite congruent angles made by two intersecting lines
  16. 30. a polygon with three straight sides and three angles