A square has a point at (3, 2).
Reflect it across the y-axis.
What changes?
A. X
B. Y
A. X
If the scale factor is 1, is the dilation.....
a. congruent (same size, same shape)
b. similar (same shape, different size)
A. Congruent
What is the Origin in a Coordinate Plane?
A. 1,2
B. 0,0
B. (0,0)
x + 1 = 10
9
Which is smaller?
A. -1
B. -3
B. -3
If you reflect over the x-axis, what changes?
A. Y
B. X
A. Y
A triangle has vertices (1, 2), (2, 4), and (3, 2).
Dilate it by a scale factor of 2 from the origin.
Is the new triangle bigger, smaller, or the same size?
Bigger
What is the Coordinate A?
(3,4)
Solve
x-5 = 10
15
-5 + 2 =
-3
Comparing Trapezoids Shape EFGH is changed to E’F’G’H’ using (x, y) → ( x, y).
A. The new trapezoid is 3 times bigger.
B. The new trapezoid is same size, same shape
C. The angles got bigger as big
Shapes and Size Look at the two triangles. The big triangle was made by stretching the small triangle. Which TWO are true?
A. The sides grew in the same way.
B. The two triangles are exactly the same size.
C. The new triangle is bigger, but still the same shape.
A and C
What is coordinate B?
(-3,2)
Solve
z + 20 = 10
z = -10
-2 + 3 =
1
If triangle FAR is similar to triangle TIP, match FA with which side?
A. TI
B. IP
A. TI
Stretching a Quadrilateral A square is changed using the rule (x, y) → (2x, 2y). What happens?
A. The shape doubles in size.
C. The shape shrinks.
A. The shape doubles in size
What is Coordinate C?
(-2,-4)
Solve
2x = 50
X= 25
-10 x 10 =
-100
Which shows a reflection?
A. Shape slides left
B. Shape flips across a line
C. Shape grows bigger
B. Shape flips across a line
Coordinates WXYZ is changed using (x, y) → (2x, 2y). If W = (1, 2), what is W’?
A. (2, 4)
B. (3, 2)
C. (1, 4)
A. (2,4)
What's coordinate D?
(6,-3)
Solve
x/5 = 20
X = 100
-20/-10 =
2