Across
- 8. a segment that connects the midpoints of two sides of a triangle
- 10. the perpendicular drawn from the vertex of the triangle to the opposite side. Also, known as the height of the triangle
- 13. the common intersection of the three altitudes of a triangle or their extensions or of the several altitudes of a polyhedron provided these latter exist and meet in a point.
- 14. A line, segment, or ray that passes through a midpoint of another segment
- 16. the same shape and size, or if one has the same shape and size as the mirror image of the other.
- 17. an angle inside a polygon at a vertex of the polygon.
- 18. the distances between that point and each object in the set are equal
- 19. When quantities have the same relative size. In other words they have the same ratio.
- 20. the point where all of the angle bisectors meet in the triangle
Down
- 1. sides are equal in length, and their corresponding angles are equal in measure.
- 2. are lines passing through the midpoint of each side which are perpendicular to the given side.
- 3. the point at which the perpendicular bisectors of the sides of a triangle intersect and which is equidistant from the three vertices.
- 4. either of the angles of a triangle that have one side in common with the base.
- 5. lines passing through the midpoint of each side which are perpendicular to the given side.
- 6. A line that splits an angle into two equal angles.
- 7. the point where the three medians of the triangle meet
- 9. a circle inscribed in a triangle or other figure so as to touch (but not cross) each side.
- 11. a line segment drawn from a vertex to the midpoint of the opposite side of the vertex
- 12. are when two triangles with two pairs of equal corresponding angles are similar.
- 15. Two figures that have the same shape are said to be similar