Dilation
Transformations
Triangle Sum & Exterior angle sum
Similar figures & Scale factor
Random
100
A dilation is defined as the following (x,y)-->(1x,1y)
Does the shape change at all?
What is no
100
How to distinguish between the original and image
What is prime notation
100
What is Exterior Angle Theorem?
The exterior angle theorem states that the measure of an exterior angle is equal to the sum of the measures of the two opposite(remote) interior angles of the triangle.
100
Are these triangles similar?
A(1,2) B(2,3) C(3,4)
A'(2,4) B'(4,6) C'(6,8)
What is Yes, scale factor of 2
100
A change in position (Slide) of a shape or object
What is a translation
200
A shape undergoes the transformation
(x,y)-->(1/3x, .33y)
Reduction or Enlargement?
What is A Reduction
(multiply by 1/3 or it means divide by 3)
200
If you have the coordinate A (-9, -4) perform a 180 degree rotation, what is A'?
What is (9, 4)
200
What is the m∠ x
m ∠x= 149o
200
Give me the scale factor
A(4,2) B(6,4) C(2,6)
A'(2,1) B'(3,2) C'(1,3)
What is Scale Factor 1/2
200
What's my rule?
A(2,-5)-->A'(10,-10)
What is (x,y)-->(x+8,y-5)
300
Preimage: (53.7, 35.8) Image: (161.1, 107.4)
What is 3?
300
(x,y) changes to (-x, y)
Think y stays the same.
rotation, reflection, translation
What is A Reflection across the y axis
(because y stayed the same, flips over y)
300
Solve for x and the measure of a
A
X = 9 and A=62°
300
Side lengths of triangle A are 5, 10, and 12. Side lengths of triangle B are 15, 30, and x (respectively). What's x?
What is 36
300
What is batman Government name and Nickname ?
What is Bruce Wayne and The Dark Knight
400
Dilations need these two things.
What is
1) Center Point of Dilation
2) Scale Factor
400
Two figures are _____ if one can be obtained from the other by transformations or a dilation.
Vocab words: reduction, center of dilation, dilation, scale factor, similar, enlargement
What is Similar
400
What is the value of y?
What is y=15
400
Similar or Not? Why?
What is Similar. Because corresponding angles are the same.
400
What year did we join the Baylor College of Medicine Family? ( When did we become a middle school)
Baylor College of Medicine (BCM)'s partnership with Houston ISD for The Rusk School (now BCM Biotech Academy at Rusk) began around 2016
500
A' (2, 4) B' (1, 2.5) C' (1.5,0.5) Determine the original coordinates if the scale factor is r = 1/4
A(8, 16) B(4, 10) C (6,2)
500
(x,y) changes to (y, -x)
(reflection a crossed , rotation 90,180,270 clockwise or counterclockwise, translation)
Rotation 90 degrees Clockwise / 270 Counterclockwise
500
A triangle has interior angle measures of (7b+12)°, (11b–9)°, and (18b–3)°. What is the value of b?
b = 5
500
These two triangles are similar. Find BOTH of the missing side lengths.
What is
s=12 and t=15
500
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Who is Captain America?