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Postulate 3: Protractor Postulate
the measure of any angle is equal to the absolute value of the difference between the real numbers for oa and ob.
Postulate 4: Angle Addition Postulate
if P is in the interior of RST, then the measurement of RST is equal to the sum of the measures of RSP and PST.
Postulate 7: Intersecting Lines
If two lines intersect, then their intersection is exactly one point.
Postulate 8: 3 noncollinear Points
Through any three noncollinear points there exists exactly one plane
Postulate 10: 2 points lie in a plane - what about the line containing them?
If two points lie in a plane, then the line containing them lies in the same plane
Theorem 2.4: Supplementary Angles - congruent?
If 2 angles are supplementary to the same angle (or to congruent angles) then they are congruent.
Theorem 2.5: Complementary Angles - congruent?
If 2 angles are complementary to the same angle (or to congruent angles) then they are congruent.
Postulate 13: Parallel Postulate
If there is a line and a point not on the line, then there is exactly one line through the point parallel to the given line.
Postulate 14: Perpendicular Postulate
If there is a line and a point not on the line, then there is exactly one line through the point perpendicular to the given line.
Postulate 16: Corresponding Angles Converse
if 2 lines are cut by a transversal so the corresponding angles are congruent, then the lines are parallel.
Theorem 3.4: Alternate Interior/Exterior angles converse
If the alternate interior and exterior angles are congruent, the lines are parallel.
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