Translations
True or False: Translating a figure will turn it sideways.
False
The spot around which a shape is rotated is called...
The point of rotation
What is the name of the line that a figure flips over?
Line of reflection/Line of symmetry
All angles in a triangle sum to...
180 degrees
The transformation in which an image is flipped across a line
Reflection
Translate the point (5,10) two units to the right. What will the new coordinate be?
(7, 10)
Is it necessary to specify the direction (clockwise or counter clockwise) for a 180 degree rotation? Yes or No?
No
What reflection would un-do a reflection over the y-axis?
Another reflection over the y-axis.
An equilateral triangle has three sides and angles that are equal. What is the measure of each of their angles?
60 degrees
Which transformation relates to angle measures
Rotations
Translate the point (-5, 76) three points to the left.
(-8, 76)
Rotating a figure around the origin also means rotating around what coordinate point?
(0,0)
What is the image of the point (-2, 4) after a reflection across the y-axis?
(2,4)
Angles whose sum equals 180 degrees are called
Supplementary angles
These types of transformations create congruent figures
Rigid Transformations
Translate the point (-225, 67) two units up and 4 units to the right. What is the new coordinate?
(-221,71)
Rotating a line segment from one of its end points creates a line that is __________ times as long.
Two
An image that has been rotated can be said to have __________ orientation
Mirror
The angles formed on opposite sides of a transversal that cuts through two parallel lines are called...
Alternate Interiors Angles
This type of transformation does not change the figure's orientation
Translation
Translate the figure A (2,4) B (3,2) and C (6,8) three units down. What are the new coordinates?
A (2, 1) B (3, -1) C (6, 5)
Rotating a line from a point not on the line creates....
Two parallel lines
Reflect the point (-23, 200) across the x-axis. Then reflect its image across the y-axis. What is the new coordinate point?
(23, -200)
An equilateral triangle has three sides and angles that are equal. What is the measure of each of their angles?
Each angle measure is 60 degrees
Rotating a line 180 degrees around a point not on the line will result in a...
pair of parallel lines