Congruency and Similarity
What are congruent polygons?
How do you translate a coordinate point up 3 units?
The rule for reflection across the x-axis.
What is (x,y) --> (x,-y) or flip the sign of the y-coordinate?
The rule for rotation 270 degrees counterclockwise about the origin.
What is (x, y) -> (y,-x)?
Fill in the blank. Polygons that are dilated are _______ to one another.
What is similar?
polygons with corresponding angles with equal measures and corresponding sides with proportional measures
What are similar polygons?
The preimage coordinate (0,0) is shifted 5 units left. What are the coordinates of the image?
What is (-5,0)?
Point (3, 2) after being reflected across the y-axis.
What is (-3,2)?
The point (2, 3) rotated about the origin 180 degrees.
What is (-2, -3)?
A scale factor 0 < k < 1 results in this type of dilation.
What is a shrink?
Polygon ABCDE is congruent to FGHIJ. What is side DC congruent to?
What is side IH?
Point (-2,6) is translated 2 units right and down 4 units. What are the coordinates of the image?
What is (0,2)?
The first step to reflect a point (x,y) across y = -3.
What is (x, y+3) or subtract -3 from the y coordinate of point (x,y)?
The point (5, -1) rotated about the origin 270 degrees clockwise.
What is 5/3 or 1.67?
If triangle WXY is congruent to triangle VWZ, and the measure of angle V = 60, and the measure of angle VWZ = 50, what is the measure of angle Y?
What is 70 degrees?
What is y = x + 6?
The point (8,-3) after being reflected across y=x.
What is (-3,8)?
The point (10, -10) rotated about the center (3, -2) 90 degrees clockwise.
What is (-8,-7)?
The coordinate (36, 12) is dilated by a scale factor of 1/6. What is the image coordinate?
Quadrilateral ABCD is similar to quadrilateral MNOP. If side AB = 3, side MN = 6, side BC = 8, what is the measure of side NO?
What is 16?
The graph y = x2 is shifted 2 units right and 3 units up. What is the new equation of the graph after the translation?
What is y = (x - 2)2 + 3?
The point (5,-7) reflected across x = 2.
What is (-1,7)?
The coordinate (0,3) was rotated 180 degrees about a center of rotation such that the image coordinate is (2, -1). What is the center of rotation?
What is (1,1)?
The point (4, 8) is dilated with scale factor 7 at center (1, 1). What is the image coordinate?
What is (22, 50)?