Across
- 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.
Down
- 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.