Reflections
A reflection is...
A _____ over a line called the ______ __ __________.
A flip over a line called the line of reflection.
A rotation is a type of transformation that turns a figure around a fixed point, called this
What is the center of rotation?
What is a translation...
To vertically and/or horizontally slide a figure...
Two angles of a triangle measure 50 degrees and 35 degrees...
What is the measure of the third angle...
95 degrees
These kind of lines are made when two or more straight lines on the same flat plane intersect
What are parallel lines?
When reflected about the line y=x, (X, Y) gets transformed into this Point of Image
What is (Y, X)?
When points (7, 0) rotate 90° about the origin, the points are transformed into this Point of Image
What is (0, 7)?
If Q=(-6,-1) R=(-3,1) S=(1,-5) T=(-2,-7) and
(x,y) - (x+7 , y+9)
Then Q=(1,8) R=(4,10) S=(8,4) T=(5,2)
What is congruent...
Two or more geometric figures that have the same size and shape...
This is the general equation of slope-intercept form
What is y=mx+b?
If the point (2, -5) were reflected about the y-axis, the point has to transform to become this Point of Image
What is (-2, -5)?
When rotated either about the origin or counter-clockwise, this rotation gives the same transformaton
What is 180°?
If C=(2,-1) D=(7,-4) E=(4,-6)
(x,y) - (x-3, y+8)
Then C'= (-1,7) D'=(4,4) E'=(1,2)
What is the square root of 400...
20...
(4,1); slope=2
Point-Slope Formula:y-y=m(x-x)
y=2x-7...
When the point (-6, -5) is reflected about the line y=-x, it will end up in this quadrant
What is quadrant I?
This term describe the fixed point that a shape rotates around
What is the center of rotation?
A pre-image point A = (2, -1) is mapped to its image point A'(5, 3) under a translation. Which rule describes this translation...
This point is made when you move 5 points to the right and 9 points down from the origin on a coordinate plane
What is (5, 9)?
If A = (-2,3), B = (2,6) C = (-1,0) D = (3,3) is it parallel or perpendicular...
Parallel...
When a point is transformed, its letter gains an apostrophe, called this
What is a prime?
These coordinates (0, 0) are almost always the center of rotation. They are called this
What is the origin?
Point P(-3, 5) is translated according to the rule (x, y) to (x + 4, y - 2) ...
What are the coordinates of the image point P'...
(1,3)...
This shape has one 90° angle in each of its four corners
What is a square?
If an $80 jacket went on sale for 34%, this is how much money was taken off of the initial price
What is $27.20?