Angles
TRUE OR FALSE: Complementary/Supplementary angles have to be adjacent.
FALSE
Reflect H(6, -7) over the x-axis
(6, 7)
T(9,9) scale factor of 1/3
X(3, -1) Rotate 180 degrees counterclockwise
(-3, 1)
In a drawing of two vertical angles, you notice that one of the angles has a measure of 2x-10, and the other angle has a measure of 30 degrees. Find x.
x = 20
When reflecting a point over the y-axis, which coordinate remains the same
y-coordinate
M(13,6) Rotate 90 degrees clockwise
(6, -13)
An angle in a linear pair has a measure of 3x + 10. The other angle in that linear pair has a measure of x + 10. What is x?
x = 40.
If point J(-8,1) is moved five units right and 11 units down, what are the coordinates of point J'
(-3, -10)
Reflection of triangle A (1, 3), B (5,2), C (4, -1) about the y-axis
A':(-1, 3)
B': (-5,2)
C': (-4, -1)
This angle of rotation creates the same image if it's rotated clockwise or counterclockwise.
What is a rotation of 180 degrees?
One angle is 56 degrees. It is complementary with another angle. How big is the other angle?
34 degrees.
Reflect R(10,1) A(0,13) Y(-3, -8) over the line y=x
R'(1,10)
A'(13,0)
Y'(-8,-3)
If the scale factor is less than 1, is it a reduction or enlargement
Reduction
Write the coordinates of the vertices P, Q, R, S after a rotation 270° counterclockwise around the origin.
P(5, 2) R(-1, 1)
Q(0, 3) S(8, 1)
P':(2, -5)
Q':(3, 0)
R':(1, -1)
S':(1, -8)
One angle has a measure of 2x - 11. It is supplementary with an angle that has a measure of 31 degrees. Find x.
x = 80.
If triangle P(0,0), R(3,-9) S(-1,1) is moved three units right and 51 units down, what are the coordinates of point P', R', S'
P' (3,-51)
R' (6, -60)
S' (2, -50)
Reflection of triangle M (2,0), E (3,1), L (-1,2) about the line x=-3
M' (8,0)
E' (-9,1)
L' (-5,2)
Write the coordinates of the vertices A, B, C after a rotation 270° counterclockwise around the center (-1,-1).
A:(-1, 2)
B:(-2,1)
C:(-1,1)
A':(2,-1)
B':(1,0)
C':(1,-1)