Triangles & Similarity
Valid Triangles
Decide whether given side lengths or angles can form a valid triangle.
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Triangle Interior Angles
Use the triangle angle sum to find missing angle measures.
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Exterior Angle Theorem
Use the Exterior Angle Theorem to find missing angle measures.
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Missing Treasure (Drawing Triangles)
Use three landmark clues to construct a triangle and locate the treasure.
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Similar Triangles
Use the Angle-Angle Similarity Theorem to find missing sides and angles.
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