Lesson 8: Practice Problems
Problem 1
Draw parallel lines
and . Pick any point
. Rotate 90 degrees clockwise around . Rotate
90 degrees clockwise around .
What do you notice?
Problem 2
Use the diagram to find the measure of each angle.
![Line EC is intersected at point B by line AD. Angle CBD is 45 degrees.](../../../../../../embeds/62526fa5--8.1.D.PP.Image.01.png)
Problem 3
Points
Find a point
so that a 180-degree rotation with center sends to and to . Is there more than one point
that works for part a?
Problem 4 From Unit 1 Lesson 6
In the picture triangle
![Triangle A prime, B prime, C prime is an image of triangle A, B, C after rotation around another point, D. Side B, C has length 4. Angle B prime has measure 52 degrees. Angle C prime has measure 50 degrees.](../../../../../../embeds/f93d47c4--8.1.B.PP.Image.01.png)
What is the length of side
? Explain how you know. What is the measure of angle
? Explain how you know. What is the measure of angle
? Explain how you know.
Problem 5 From Unit 1 Lesson 5
The point