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