### Angles and SimilarityPublished on Experiment with the measures of the angles of similar triangles to determine conditions necessary for two triangles to be similar. | | Download7,035 |

### Corresponding Parts of Similar TrianglesPublished on Change the scale factor (r) between similar triangles; identify the corresponding parts and establish relationships between them. | | Download6,874 |

### Similar FiguresUpdated on Observe what happens to ratios of pairs of side of rectangles and triangles. | | Download7,155 |