Ch 14 Coordinate Geometry Flashcards
1
Q
The Distance Formula
A
d = sqrt((y_2 — y_1)^2 + (x_2 — x_1)^2)
2
Q
The Midpoint Formula
A
((x_1 + x_2)/2) , ((y_1 + y_2)/2)
3
Q
Reflection
A
The mirror image of an image is projected across a line of symmetry.
4
Q
Rotation
A
To turn an image about a center, typically the origin. After a rotation, the distance from the center stays the same.
5
Q
Projection
A
Think of it as a an object casting a shadow on a line.
