Parallel Lines and Transversals
Reflections
Equations
Dilations
Basic Angles
100
Name the relationship of the marked angles :
Alternate Interior Angles
100
When reflecting an image, you do this to the preimage.
What is flip?
100
Solve: 6a + 5a = −11
a = -1
100
When dilating a figure, you do this to the preimage.
What is make it bigger or smaller?
100
This angle is greater 90 degrees but less than 180 degrees.
What is an obtuse angle?
200
Name the relationship of the angles below:
Alternate Exterior Angles
200
Find the new coordinates of (3,-2) after a reflection over the x-axis.
What is (3, 2)?
200
Solve: k − 2 + 3 = −2
k = -3
200
What happens to your preimage when dilating the figure by a scale factor of 1/2?
The image reduces in size.
200
Two angles whose sum is 90°.
What are complementary angles?
300
What is the relationship between the marked angles?
Corresponding Angles
300
What are two methods that can be used to reflect an image?
Use the rule to change the signs or count boxes.
300
Solve: 18 = 3(3x − 6)
x = 4
300
What is W' after taking Point W (2, -9) and dilating the point by a scale factor of 4?
W' (8, -36)
300
The supplement of a 79o angle.
What is a 101o?
400
If the measure of angle 1 is 105 degrees, what is the measure of angle 8?
105 degrees
400
What is Z' after taking Point Z (-1, 5) and reflecting it over the y-axis?
What is (1, 5)?
400
Solve: 8(1 + 5x) + 5 = 13 + 5x
x = 0
400
This letter can be used to represent the scale factor.
What is k?
400
Two complementary angles are represented by (x+26)o and 59o, find x.
x = 33o
500
Determine the measure of angle 7, if angle 4 is 128 degrees:
52 degrees
500
If Point A (-8, 5) becomes Point A' (-8, -5), what was the line of reflection?
The x-axis.
500
Solve: 3 + 5n = 5(n + 2) - 7
Infinitely Many Solutions
500
Determine the scale factor: D (3, 9), E (6, 6), F (6, 0) becomes D' (1, 3), E' (2, 2), F' (2, 0).
k = 1/3
500
Two supplementary angles are represented by (2x+15)o and (3x+10)o, find x.
x = 31