Section A Section A Checkpoint

Problem 1

Here is line segment $AB$ and a point $C$ .

Reflect line segment $AB$ across the $x$ -axis. What are the coordinates of the new endpoints?
Point $C$ is translated 3 units to the left and 2 units up. Plot this point on the grid and label it $C’$ .

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Solution

The image of $A$ is at $(\text-4,\text-5)$ and the image of $B$ is at $(3, \text-2)$ .

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Sample Response

The image of $A$ is at $(\text-4,\text-5)$ and the image of $B$ is at $(3, \text-2)$ .

Here are 2 figures. Describe a sequence of transformations that takes triangle $ABC$ to triangle $DEF$ .

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Solution

Sample response: Translate triangle

ABC

so that

A

moves to

D

. Rotate 90 degrees counterclockwise around point

D