Line Reflections
Measure A is equal to (-8, 7). However, it has flipped over the x-axis. What is measure A’?
A’ = (-8, -7)
What rule is 90 degrees counterclockwise equal to?
270 degrees clockwise
Figures DEF have been dilated.
D: (-1, 1)
E: (-1, -1)
F: (1, -1)
If r = 3, what are D'E'F'?
D' = (-3, 3)
E' = (-3, -3)
F' = (3, -3)
Triangle ABC and PQR are congruent, which means they have equivalent sides.
What side is "<A" congruent to?
<P
I am an angle is on the same side of the transversal and the same side of the parallel lines. I am in the same corner and congruent.
What am I?
Corresponding angle
Measure X is equal to (6, -3). However, it has flipped over the y-axis. What is measure X’?
X’ = (-6, -3)
Measure D has rotated from (2, 2) to (-2, -2). What rotation is used here?
180 degrees (-x, -y)
A figure has been diluted by 2.5
Is this enlargement or reduction?
Enlargement
Triangle EFG and STU are congruent, which means they have equivalent sides.
What side are "GE" congruent to?
US
I am an angle on opposite sides of the transversal and outside the parallel lines. I am also congruent.
What am I?
Alternate Exterior angle
Reflect A and B across the line Y = X
A: (-2, 2)
B: (-6, 5)
A’ = (2, -2)
B’ = (5, -6)
If measure A is rotated 270 degrees counterclockwise, what is A'?
A: (4, 2)
A' = (2, -4)
Figures ABC need to be diluted.
A: (-3, 3)
B: (-3, -3)
C: (3, -3)
If r = 1/3, what are A'B'C' equal to?
A' = (-1, 1)
B' = (-1, -1)
C' = (1, -1)
Shapes ABCDE and JKLMN are congruent. If side "AE" is 22 feet, how long is side "JN"?
22 feet
I am an angle on the same side of the transversal and inside the parallel lines. I am supplementary.
What am I?
Same Side Interior angle
Measure J equals to (6, 3). It has reflected across a line and now equals to (-3 , -6).
What equation was used?
Y = -X
Measures ABC need to rotate 90 degrees clockwise in order to match A'B'C'.
A: (4, 4)
B: (6, 8)
C: (8, 4)
What is A'B'C'?
A' = (4, -4)
B' = (8, -6)
C' = 4, -8)
If figure C is diluted by 1/2, what is C'?
C: (2, -3)
C' = (1, -1.5)
Triangle ABC is similar to DEF. Side AB is equal to 10, side DE is equal to 15. What is supposed to be done?
Divide AB/DE
It is equal to 10/15
Lastly, simplify it to 2/3
I am an angle that adds to 90 degrees.
What am I?
Measures LMN need to be flipped over the line Y = -X.
L: (0, 5)
M: (4, -2)
N: (3, -5)
What is L'M'N'?
L' = (-5 , 0)
M' = (2 , -4)
N' = (5 , -3)
Measures ABC have been rotated. What kind of rotation was used?
A: (4, 4) --> A': (4, -4)
B: (6, 8) --> B': (8 -6)
C: (8, 4) --> C': (4, -8)
270 degrees counterclockwise or 90 degrees clockwise
Measures DEFG need to be diluted. If r = 3/4, what is D'E'F'G' equal to?
D: (-3, 4)
E: (3, 4)
F: (3, -4)
G: (-3, -4)
D' = (2.25, 3)
E' = (2.25, 3)
F' = (2.25, -3)
G' = (-2.25, -3)
Shape ABCD is similar to EFGH. Side AB is equal to 20m, side EF is equal to 16m.
Side BC is equal to 12m.
What is side FG equal to?
Divide AB/EF
It is equal to 20/16
Simplify it to 5/4 and get 1.25
Divide 12 by 1.25 and get 9.6m
Side FG = 9.6m
I am an angle that is across from the other and I am formed by intersecting lines. I am also congruent.
What am I?
Vertical angle