Lesson 4: Similarity of Figures and Triangles

Question 1

Figures with the same shape whose corresponding sides have equal ratios and whose angles are equal- uses the relation symbol ~.

Answer 1

Similar Figures

Question 2

If two angles of a triangle are congruent to two angles of another triangle, then the triangles are similar.

Answer 2

Angle-Angle (AA) Similarity Theorem

Question 3

If two sides of a triangle are proportional to two sides of another triangle and their included angles are congruent, then the triangles are similar.

Answer 3

Side-Angle-Side (SAS) Theorem

Question 4

If three sides of a triangle are proportional to three sides of another triangle, then the triangles are similar.

Answer 4

Side-Side-Side (SSS) Similarity Theorem