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GeoGebra
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Outline
Proofs
Vertical Angle Theorem
Two-column proof (Corresponding Angles)
Two-column Proof (Alt Int. Angles)
Same-side Interior Angles Postulate
Converse of Same Side Interior Angles Postulate
Prove Converse of Alternate Interior Angles Theorem
Converse of Corresponding Angles Theorem
Proving Lines Parallel #1
Proofs
Author:
Jenny Secor
Vertical Angle Theorem
Two-column proof (Corresponding Angles)
Two-column Proof (Alt Int. Angles)
Same-side Interior Angles Postulate
Converse of Same Side Interior Angles Postulate
Prove Converse of Alternate Interior Angles Theorem
Converse of Corresponding Angles Theorem
Proving Lines Parallel #1
Next
Vertical Angle Theorem
New Resources
International Day of Mathematics 2025
centripetal force
Untitled
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Discover Topics
Random Experiments
Linear Functions
Pythagoras or Pythagorean Theorem
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