Unit 4 Vocabulary

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