(Dilations)
(Similarity and Congruence)
(Rotation, etc.)
Reflections
Translations
100
The geometric process that enlarges or reduces an image.
The letter that is used for a scale factor.
What is dilation?
What is k?
100
Two figures are ______ if the angles are congruent and the length of the sides is proportional
What is similar?
100
The angle of this rotation.
What is 180 degrees?
100
When we reflect across the x-axis, the only part of the coordinate that changes.
The y value
100
What a translation is.
What is sliding of an image horizontally and/or vertically?
200
A triangle has vertices A (1, 1) B (-3, 2) and C (4, 0). Dilate the figure using a scale factor of 3.
What is A' (3, 3) B' (-9, 6) and C' (12, 0)?
200
Two figures are _______ if they are the same size and shape.
What is congruent?
200
When rotated as shown, the coordinates of B1.
What is (-1, -4)
200
Is this reflection?
What is no, this is a translation.
200
Describe this translation.
What is 7 right.
300
If the scale factor is less than 1 then the dilated image is ______ than the original
What is smaller?
300
Is it possible for a stop sign and home plate to be similar?
What is no?
300
The two transformations that happened to the blue shape to make the green shape?
What are rotation and dilation?
300
The coordinate for A' when the figure is reflected across the y axis.
What is (5,1)?
300
The translation shown on the graph.
What is right 4, down 9?
400
The scale factor, k, for this enlargement. Remember new point divided by old point. This will be an improper fraction.
What is 3/2?
400
Are they similar? How do you know?
What is yes because if two angles of a triangle are the same, then the triangles are similar?
400
The preimage is green and the image is blue. Describe the rotation.
What is 90 degrees counterclockwise.
400
The two transformations that happened to the big shape to make the small shape.
What are reflection and dilation (reduction)?
400
The coordinate of B' when the triangle is translated left 2 down 4.
What is (-6, -1)?
500
Scale factor going from small to large figure.
What is 3?
500
Similar or not, explain.
What is yes, because the ratio of 120/180 is 12/18 or 2/3 and the ratio of 90/135 is also 2/3 (factor of 45).
500
A', B' and C' after rotating 90 degrees around the origin.
What are
500
The exact descriptions of the transformation of the blue figure into the red figure.
What is reflection across the x axis and then translation 6 to the right.
500
Ignore the yellow figure. What will be the coordinate of R' after translating the blue triangle up 7, right 9?
R (1, -9)
What is (10, -2)?