Right Angle Theorem – SSS & AAS – Two Column Proofs

This geometry video tutorial provides a basic introduction into the right angle theorem and provides examples of how to use it in a two column proof problem along with cpctc and triangle congruence theorems such as the SSS and AAS postulates.

Triangle Congruence – SSS, SAS, ASA:

CPCTC – 2 Column Proofs With Triangles:

Hypotenuse Leg Theorem – HL Postulate:

Detour Proofs – Double Triangle Congruence:

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The Midpoint Formula:

Missing Diagrams – 2 Column Proofs:

Perpendicular Bisector Theorem:

Altitude, Median, Midpoint & P. Bisector:

Parallel & Perpendicular Lines – Slope:

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Indirect Proofs – Example Problems:

Proving Parallel Lines With Proofs:

The Exterior Angle Theorem:

Exterior Angle Inequality Theorem:

Polygons:

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