G.31
Justify whether conjectures are true or false in order to prove theorems and then apply those theorems in solving problems, communicating proofs in a variety of ways, including flow chart, two-column, and paragraph formats.
Khan Academy ResourcesIntro to inverse trig functionsSolving for a side in right triangles with trigonometryAngles of elevation and depressionTrigonometric ratios in right trianglesRight triangle trigonometry reviewSpecial right triangles reviewHypotenuse, opposite, and adjacentSolve for a side in right trianglesSpecial right trianglesTrigonometric ratios in right trianglesProve theorems using similarityPythagorean theorem challengeProve triangle propertiesProve parallelogram propertiesLine and angle proofsSolve for an angle in right trianglesProofs with transformationsRight triangle trigonometry word problemsSolving for a side in right triangles with trigonometryTrigonometric ratios in right trianglesProof of the quadratic formulaProof: The diagonals of a kite are perpendicularProofs concerning isosceles trianglesProofs concerning equilateral trianglesSpecial right triangles proof (part 2)Special right triangles proof (part 1)30-60-90 triangle example problemIntro to angle bisector theoremExploring medial trianglesProof: Opposite angles of a parallelogramProof: Rhombus diagonals are perpendicular bisectorsProof: Opposite sides of a parallelogramProof: Diagonals of a parallelogramProof: Rhombus areaArea of a regular hexagonProving triangle medians intersect at a pointMulti-step word problem with Pythagorean theoremProof: Parallel lines divide triangle sides proportionallyRight triangle word problemProofs with transformationsUsing right triangle ratios to approximate angle measure

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