chapter 2 geometry

(x,y) to (y,-x)

270 degree rotation

(x,y) to (-x,y)

reflection on the y axis

(x,y) to (x+a , y+b)

translation

Vertical angles

2 intersecting lines

(x,y) to (x,-y)

reflection on the x axis

(x,y) to (-x,-y)

180 degree rotation

(x,y) to (-y,x)

90 degree rotation

Adjacent angles

common vertex and common side. no common end point

Linear Pair

angles that form a line. opposite rays. sum of angles is 180 degrees