Lesson 2

Naming the Moves

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Problem 1

Each of the six cards shows a shape.

6 panels each showing the one of three different figures in different positions and orientations.
  1. Which pair of cards shows a shape and its image after a rotation?
  2. Which pair of cards shows a shape and its image after a reflection?

Solution

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Problem 2

The five frames show a shape's different positions.

5 panels showing the same figure in different positions and orientations.

Describe how the shape moves to get from its position in each frame to the next.

Solution

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Problem 3

The rectangle seen in Frame 1 is rotated to a new position, seen in Frame 2.

A figure of rectangular Frame 1 and Frame 2, each with a rectangle.

Select all the ways the rectangle could have been rotated to get from Frame 1 to Frame 2.

A:

40 degrees clockwise

B:

40 degrees counterclockwise

C:

90 degrees clockwise

D:

90 degrees counterclockwise

E:

140 degrees clockwise

F:

140 degrees counterclockwise

Solution

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(From Unit 1, Lesson 1.)