Across
- 3. is a ray that cuts an angle exactly in half, making two equal angles
- 4. angle The measure of an angle is between 0° and 90°
- 6. is a segment of a circle (special chord) that passes through the center and has its endpoints on the circle.
- 9. geometric objects that have only location. To describe their location, we use coordinates. The coordinates of a point describe where it is located with respect to the x and y axes. They are given in the form (x,y)
- 11. is an angle with its vertex at the center of a circle
- 12. line segment where two faces intersect
- 15. to that side of a triangle
- 17. angles whose sum is 90°
- 18. any polygon in which all angles are less than 180°
- 19. polygon by which a solid object is bound. For example, a cube has six faces.Each face is a square
- 20. line segment connecting a vertex to the opposite side and
Down
- 1. the point in a triangle where the three perpendicular bisectors meet. This point is the same distance from each of the three vertices of the triangle
- 2. polygon with an angle measuring more than 180°. Concave polygons look like they are collapsed or have one or more angles dented in.
- 5. a combination of two transformations: a reflection over a line followed by a translation in the same direction as the line
- 7. triangle with three equal sides and equal angles
- 8. a triangle with all three angles less than 90°
- 10. side of a right triangle that is opposite the right angle
- 13. When two figures have corresponding lengths are the same, and if all corresponding angles have the same measure. Colloquially, we say they "are the same size and shape," though they may have different orientation. (One might be rotated or flipped compared to the other.)
- 14. when "if" and "then" parts of a sentence are switched
- 16. line segment drawn in a circle that has both endpoints on the circle