Geometry Crossword

1. has all 4 sides of equal length. All angles are 90 degrees.
5. Angle is greater than 90 degrees.This angle is also less than 180 degrees
8. a polygon with 4 sides. These shapes fall down this category: squares, rectangles, trapezoids
9. contains one circular face. Meets at one point at the top.
11. The diameter divided by 2. Straight line from the center of the circle to the circumference
13. The intersection point of two sides of a figure. Point where two or more curves, lines, or edges meet.
16. Distance around the outer boundary of a circle. The formula is 2 times pi times the radius.
19. quadrilateral having both pairs of opposite sides parallel. The opposite pairs of sides are also congruent to each other
21. angle formed by perpendicular segments. Angle at 90 degrees.

2. A ray that divides any angle in half. Makes 2 equal angles in the process
3. This theorem is used to find lengths of a triangle. The formula is a^2 + b^2= c^2
4. Has 5 sides. People recognize this shape as a house.
6. All of the sides are equal. All the angles are equal.
7. Line segment 2 points in a curve. Straight-line with endpoints that lie in a circular arc
10. Straight line passing through the center of the circle. The radius multiplied by 2
12. Contains 3 unequal sides. Also contains 3 unequal angles.
14. This angle is greater than 0 degrees. However it is less than 90 degrees.
15. Two lines in a two-dimensional space that do not meet (for example, the opposite sides of a square). A parallelogram has two sets of these lines.
17. A closed four-sided figure with parallel opposite sides. In other terms people call it a diamond.
18. Two line segments that cross to form 90-degree angles. At an angle of 90° to a given line, plane, or surface.
20. part of a straight line that is originating from a point. Extends in one direction from a point.