Dilations and Similarity in the Coordinate Plane Flashcards
1
Q
What is a Dilation?
A
A transformation that changes the size of a figure but not its shape.
2
Q
What is Scale Factor?
A
An amount that describes how much the figure is enlarged or reduced.
3
Q
How can you find a new point of a Dilated Image?
A
You take an original point (a,b) and multiply it by the scale factor k, so it becomes (ka,kb).
4
Q
What is SAS Similarity?
A
Side-Angle-Side Similarity; where 2 sides of one triangle are proportional to two sides of another and their included angles are congruent.
5
Q
What is the Distance Formula?
A
D=sqrt((x2-x1)^2)+((y2-y1)^2).
