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Honors Geometry
What are we learning in Unit 6 — Similarity?
Self-Rating:
1: I've never seen this topic and wouldn't even know how to begin.
2: I've heard or seen this before but don't know how to start or complete the problem.
3: I know the topic and can work through the problem but am unsure whether I am correct.
4: I feel confident that I could present my work and solution to the class.
5: I feel that I could correctly teach this topic to another student.
Target
6A. Perform a dialation with a given center and
scale factor on a figure in the coordinate plane
6B. Verify the characteristics of dilations:
 For instance, when a side passes through
the center of dilation, the side and its
image lie on the same line
 Corresponding sides of the pre-image and
image are parallel
 A side length of the image is equal to the
scale factor multiplied by the
corresponding side length of the preimage
6C. Define similarity using rigid motions and
dilations
Notes/Examples & Further Study
Beg.
Mid.
End
6D. Identify corresponding sides and
corresponding angles of similar triangles by
demonstrating that in a pair of similar triangles,
corresponding angles are congruent.
6E. Determine that two figures are similar by
verifying that angle measure is preserved and
corresponding sides are proportional
6F. Justify and conclude that AA similarity is a
sufficient condition for two triangles to be similar
6G. Use theorems, postulates, or definitions to
prove theorems about triangles including:
 A line parallel to one side of a triangle
divides the other 2 proportionally

If a line divides two sides of a triangle
proportionally, then it is parallel to the
third side

Using triangle congruence and triangle
similarity to solve problems and prove
relationships in geometric figures