Triangle Angle Sum Theorem & Exterior Angle Theorem

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How to Classify Triangles OFF the Coordinate Plane

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How to Classify Triangles ON the Coordinate Plane

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Isosceles Triangle Theorems

Applying Isosceles Triangle Theorems

Hinge theorem and Triangle inequality theorem

Applying the hinge theorem and Triangle inequality theorem

Midsegments of a triangle

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Points of Concurrency

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Congruent Figures

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Congruent Triangle Theorems

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Congruent Triangle Proofs

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