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Lesson: Identifying Similar Triangles

In this lesson, we will learn how to identify similar triangles.

Question Video: Using the Angle-Angle Criterion to Prove Similarity

03:05

Worksheet: Identifying Similar Triangles • 22 Questions

Q1:

Which of the following properties is enough to conclude that two triangles are similar?

AThey have the same measure of angles.
BOne corresponding side and one corresponding angle are equal.
CThey both contain a right angle.
DAll corresponding angles have the same ratio.
ETwo corresponding sides have the same ratio.

Q2:

Two triangles are similar. What will be true of the lengths of the corresponding sides of both triangles?

A They will be in a constant ratio.
B They will be equal.
C Only two corresponding sides will be equal.
D If the angles are equal, the sides will be equal.

Q3:

If all of the corresponding angles in two triangles have equal measures, are the two triangles similar?

A no
B yes

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