An image under this reflection goes from (x,y) to (-x,y). The only thing that changes is the sign of the x coordinate.
What is a reflection in the y-axis?
100
It moves a point or set of points horizontally or vertically but does not change the size or shape of the figure.
What is a translation?
100
This type of transformation stretches or shrinks the figure.
What is a dilation?
100
PICTURE JEOPARDY!
Referring to the picture, this lettered point goes to C in a 90 degree clockwise rotation
What is A?
100
It touches a circle but never enters into it.
What is a tangent?
200
An image under this reflection goes from (x,y) to (x,-y). The only thing that changes is the sign of the y coordinate.
What is a reflection in the x-axis?
200
The translation from (1,2) to (5, -3)
What is T(4, -5) or T(x+4, y-5)?
200
What the point (3,-4) becomes under a 'D2' operation
What is (6, -8)? (3*2, -4*2) = (6, -8)
200
PICTURE JEOPARDY!
Referring to the picture, B goes to this letter when the figure is rotated 90 degrees counter-clockwise
What is H?
200
PICTURE JEOPARDY!
Looking at the figure, this is the measure of chord segment AE when EB = 3, CE = 4, and ED = 6.
What is 8?
300
An image under this reflection goes from (x,y) to (y,x). Both coordinates switch position.
What is a reflection in the line y=x?
300
Under T(-5,3), the point (3, -3) moved to this point.
What is (-2,0)?
300
A dilation of 1/2 takes the point (10,8) to this point.
What is (5,4)?
(10/2, 8/2) = (5,4)
300
When rotated this many degrees, the figure's points change from (x,y) to (-y,x).
Look in your 'Review of Transformations' guide for help!
What is 90 degrees?
300
This is the measure of the largest angle in a triangle when the ratio of the measures of the three angles is 2:3:4.
What is 80 degrees?
2x + 3x + 4x = 180 degrees
9x = 180
x = 20
4x is the largest angle -> 4(20) = 80
400
Under this reflection, the image of (a,b) is (-a, -b). The coordinates stay in the same position but their signs change.
What is a reflection in the origin?
400
Using T(6,3), this point moved to (11,4).
What is the point (5,1)?
400
These points result from a dilation of 3 on the points (-2,0), (-2,5), and (1,5).
What are (-6,0), (-6,15), and (3,15)?
(-2*3, 0*3) = (-6,0)
(-2*3, 5*3) = (-6,15)
(1*3, 5*3) = (3,15)
400
The letter in MATH that has rotational symmetry
What is H?
400
This is the equation of a circle with center (-4, -3) and radius 2
What is (x + 4)^2 + (y+3) ^2 = 4
500
Under this reflection, the image of (3,5) is (-3, -5)
What is a reflection in the origin?
500
Using this translation, (1,0) moved to (7, -4).
What is T(6, -4) or T(x+6, y-4)?
500
This point is the result of a dilation of 2 on (6,7) and then a reflection in the y-axis.
What is (-12,14)?
(6*2, 7*2) = (12,14)
Reflection in the y axis: (12,14) => (-12,14)
500
An equilateral triangle has this order of rotational symmetry
What is 3?
An equilateral triangle can be rotated in 3 different ways and still look the same as the original equilateral triangle.
500
This is the slope of a line perpendicular to the points passing through (2,7) and (1,4)
What is -1/3?
The slope of a line passing through (2,7) and (1,4) is [(7-4)/(2-1)] -> (3/1) = 3. The perpendicular slope of 3 is the negative reciprocal -> -1/3