Math Section D

R y-axis

(-x, y)

R x-axis

(x, -y)

R y = x

(y, x)

R y = -x

(-y, -x)

T<x,y>

x> left/right

y>up/down

r (90, 0) = r (-270, 0)

(-y, x)

r (180, 0)

(-x, -y)

r (270, 0) = r (-90, 0)

(y, -x)

what are all the congruency patterns

SSS, SAS, ASA, AAS, HL

what are patterns that don’t work

SSA, AAA

what do parallel lines do

make alternate interior angles

vertical angles

the angles that lie opposite to each other when two lines intersect

reflexive property

a quantity or relation is equal to or related to itself

congruent segment theorem

two line segments are congruent if and only if they have the same length

Congruent angle theorom

two angles are congruent if they have the same measure

midpoint

the point on a line segment that is exactly halfway between the two endpoints

CPCTC

Corresponding Parts of Congruent Triangles are Congruent