Across
- 2. MEAN The value $x$ in the proportion $a/x = x/b$.
- 5. Angles or sides that are in the same relative position in similar figures.
- 7. Lines that never intersect and often create similar triangles.
- 9. A perpendicular segment from a vertex to the opposite side.
- 11. The ratio of these in similar figures is equal to the scale factor.
- 12. The first and last terms in a proportion like $a$ and $d$.
- 17. The middle terms in a proportion like $b$ and $c$.
- 20. The original figure before a transformation.
- 21. Angles in similar figures must be this or equal in measure.
- 22. The fixed point about which a figure is dilated.
- 23. The ratio of these in similar figures is the square of the scale factor.
- 24. The mathematician associated with the Basic Proportionality Theorem.
- 25. A ray that divides an angle into two equal parts.
- 28. A transformation that produces an image of a different size but the same shape.
- 29. Similarity theorem involving two sides in proportion and the included angle.
- 30. The ratio of the length of a model to the length of the real object.
Down
- 1. A dilation where the scale factor is between 0 and 1.
- 3. A segment from a vertex to the midpoint of the opposite side.
- 4. The state or quality of being mathematically alike in shape.
- 6. A dilation where the scale factor is greater than 1.
- 8. A comparison of two quantities by division.
- 10. A segment connecting the midpoints of two sides of a triangle.
- 13. The resulting figure after a transformation.
- 14. FACTOR The ratio of the lengths of two corresponding sides.
- 15. An equation stating that two ratios are equal.
- 16. A line that crosses two or more other lines.
- 18. Having the same shape but not necessarily the same size.
- 19. The ratio of these in similar solids is the cube of the scale factor.
- 26. Similarity theorem where all three sets of corresponding sides are in proportion.
- 27. The postulate stating triangles are similar if two angles are congruent.