1. Splash Screen

2. Five-Minute Check (over Lesson 13–7) Main Idea and Vocabulary
Key Concept: Rotation
Example 1: Sketch a Rotation
Lesson Menu

3. I will sketch rotations on a coordinate grid.
Main Idea/Vocabulary

4. KC

5. Sketch a Rotation
Example 1

6. Step 1 Graph the original triangle. Step 2 Graph the rotated image.
Sketch a Rotation
Step 1 Graph the original triangle.
Step 2 Graph the rotated image. A B C B A A
90° B C
Example 1

7. Sketch a Rotation
Answer: The ordered pairs for the new vertices are A(8, 7), B(5, 9), and C(5, 5).
Example 1

8. Which shows the new vertices of the triangle when it is rotated 90° counterclockwise about point B?
A. A(3, 3), B(6, 3), C(6, 5)
B. A(6, 5), B(3, 3), C(6, 3) A B C D
C. A(5, 5), B(8, 5), C(8, 7)
D. A(3, 1), B(6, 0), C(6, 3)
Example 1

9. End of the Lesson
End Lesson

10. Five-Minute Check (over Lesson 13–7) Image Bank Math Tool Chest
Identify Angles
Resources

11. (over Lesson 13–7)
Which shows the ordered pairs for the new vertices after a reflection across the line?
(7, 8), (7, 4), (8, 3)
(8, 8), (7, 3), (9, 5)
(6, 7), (6, 5), (6, 7)
(7, 10), (6, 5), (11, 8) A B C D
Five Minute Check 1

12. (over Lesson 13–7)
Which shows the ordered pairs for the new vertices after a reflection across the line?
(4, 5), (3, 8), (6, 9), (8, 7)
(4, 4), (3, 7), (6, 8), (8, 8)
(5, 4), (8, 3), (8, 6), (7, 8)
(4, 5), (3, 8), (6, 8), (8, 7) A B C D
Five Minute Check 2

13. End of Custom Shows