# Finding Angle Measures

- Topic:
- Geometry

## Explore the vertical angles below to test the vertical angle theorem.

## Look at the image above

What do you notice about the measures of the RED angles and the BLUE angles?

## Look at the image below and answer the question

What is the measure of angle ACD (red)? How do you know?

## Look at the image above

What are the angle measures for angles x, y, and z?

What are the angle measures of angles h, j, k and m?

## Review: Sequences of Transformations

Below, practice identifying the sequences of transformations that produce the given image and preimage.

What series of transformations would take ABC to DEC?

## What series of transformations take ABCD to ECGF?

## Look at the image above

What series of transformations take ABCD to ECGF?

## Review Symmetry

Review the applets below to practice identifying symmetry.

How many lines of symmetry does the "H" have? (Shape #12)

Use the applet above to check the rotation symmetry of the shapes. What angles give rotation symmetry for image #3?