Unit 1 - Lesson 3 - Grade 8: Illustrative Mathematics

By Formative Library

Last updated 2 months ago

10 Questions

Note from the author:

Grade 8 Unit 1
Lesson 3: Grid Moves
CC BY 2021 Illustrative Mathematics®

Instructions

Grade 8 Unit 1
Lesson 3: Grid Moves
CC BY 2021 Illustrative Mathematics®

Lesson: Grid Moves

Notice and Wonder: The Isometric Grid (Warm Up)

What do you notice? What do you wonder?

Transformation Information

Your teacher will give you tracing paper to carry out the moves specified. Use A', B', C', and D' to indicate vertices in the new figure that correspond to the points A, B, C, and D in the original figure. 

In Figure 1, translate triangle ABC so that A goes to A' .

In Figure 2, translate triangle ABC so that C goes to C' .

In Figure 3, rotate triangle ABC 90° counterclockwise using center O.

In Figure 4, reflect triangle ABC using line ℓ .

In Figure 5, rotate quadrilateral ABCD 60° counterclockwise using center B.

In Figure 6, rotate quadrilateral ABCD 60° clockwise using center C.

In Figure 7, reflect quadrilateral ABCD using line ℓ.

In Figure 8, translate quadrilateral ABCD so that A goes to C.

Cool Down: Some Are Translations and Some Aren’t

Unit 1 - Lesson 3 - Grade 8: Illustrative Mathematics

Notice and Wonder: The Isometric Grid (Warm Up)

What do you notice? What do you wonder?

Transformation Information

In Figure 1, translate triangle ABC so that A goes to A' .

In Figure 2, translate triangle ABC so that C goes to C' .

In Figure 3, rotate triangle ABC 90° counterclockwise using center O.

In Figure 4, reflect triangle ABC using line ℓ .

In Figure 5, rotate quadrilateral ABCD 60° counterclockwise using center B.

In Figure 6, rotate quadrilateral ABCD 60° clockwise using center C.

In Figure 7, reflect quadrilateral ABCD using line ℓ.

In Figure 8, translate quadrilateral ABCD so that A goes to C.

Some Are Translations and Some Aren’t

Which of these triangles are translations of Triangle A? Select all that apply.