Alternate Interior Angles Theorem
Alternate Exterior Angles Theorem
Consecutive Interior Angles Theorem
Corresponding Angles Theorem
Supplementary Angles
Vertical Angles Theorem
Transitive Property
Slope of a line
Perpendicular Lines
Perpendicular Bisector
Angle Bisector
Midpoint
Triangle Midsegment Theorem
Triangle Inequality Theorem
Linear Pair Postulate
Angle Addition Postulate
Segment Addition Postulate
Parallel Lines
Centroid