Hypotenuse Leg Theorem – HL Postulate – Two Column Proofs

This geometry video tutorial provides a basic introduction into the hypotenuse leg theorem also known as the HL postulate. it’s another triangle congruence theorem that helps you to prove that two right triangles are congruent to each other. This video focuses on geometry proofs using cpctc and two column proofs. It contains plenty of examples and practice problems.

Triangle Congruence – SSS, SAS, ASA: https://www.youtube.com/watch?v=jWHOF6cFbpw

CPCTC – 2 Column Proofs With Triangles:

Hypotenuse Leg Theorem – HL Postulate:

Detour Proofs – Double Triangle Congruence:

The Midpoint Formula:

Missing Diagrams – 2 Column Proofs:

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Right Angle Theorem – SSS & SAS:

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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