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Triangle Similarity and Transformations

Triangle Similarity and Transformations

Assessment

Interactive Video

•

Mathematics

•

6th - 7th Grade

•

Practice Problem

•

Hard

Created by

Liam Anderson

FREE Resource

This lesson teaches how to determine if two triangles are similar by checking for two corresponding congruent angles. It explains the concepts of dilation and rotation as transformations that help in identifying similarity. The lesson includes a practical example where two triangles are compared using these transformations to establish similarity. By the end, students will understand how to use congruent angles and transformations to determine triangle similarity.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary method to determine if two triangles are similar?

Checking if they are both right triangles

Verifying they have the same perimeter

Ensuring they have the same area

Checking for two corresponding congruent angles

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does a dilation transformation do to a shape?

Changes its color

Flips it over a line

Rotates it around a fixed point

Changes its size while maintaining its shape

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which transformation involves turning a shape around a fixed point?

Translation

Dilation

Rotation

Reflection

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What must be true about the angles of two similar triangles?

The sum of angles must be 180 degrees

All angles must be right angles

At least two corresponding angles must be congruent

All angles must be congruent

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the example of triangles ARM and LEG, what transformation is applied first?

Dilation

Translation

Rotation

Reflection

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

After rotating triangle ARM, what is the next step to determine similarity with triangle LEG?

Translate it to a new position

Dilate it to match the size of triangle LEG

Reflect it over a line

Change its color

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of dilating the rotated image of triangle ARM?

It changes shape

It matches the size of triangle LEG

It becomes smaller than triangle LEG

It becomes larger than triangle LEG

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