SUPPLEMENTARY ANGLES. 2-angles that add up to 180 degrees. COMPLEMENTARY ANGLES. 2-angles that add up to 90 degrees. Vertical Angles . Vertical Angles are Congruent to each other. <1 =<3 <2=<4 <1+<2=180 degrees <2+<3=180 degrees <3+<4=180 degrees <4+<1=180 degrees.
(Big Angle Small Angle!!!!!)
MEDIANS ARE IN A RATIO OF 2:1
The locus of points equidistant from two points, P and Q, is the perpendicular bisector of the line segment determined by the two points.
m∠O = m arc-AB