1. Move point C and observe how the
angle measures change.
When AC changes,
m ABC and mzADC
V and are
to each other.
Check
M

Which triangle congruence postulate or theorem justifies my claim that the steps i made using construction paper and scissors produce an isosceles triangle? was it sss, sas, asa, aas, or hl?

Write two subtraction equations that are equivalent to 5 + 12 = 17.

Solve the given system of equations. 2y= -x+9 , 3x-6= -15