Triangles Inside a Trapezoid

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Use the area of a triangle to transform a trapezoid into different quadrilaterals.

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Area Formulas

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Investigate the areas of triangles in a variety of ways.

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Interactive Pythagoras

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Use the concept of area to demonstrate the Pythagorean Theorem.

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Planting Trees

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Help a farmer plant four trees.

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Half As Much May Be Right

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Explore triangles inscribed in semicircles.

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Balancing the Triangular Totter

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Locate the center of mass of a triangle.

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To Be or Not to Be

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Determine the necessary conditions to create a triangle.

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Outside Looking In

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Identify the sum of the exterior angles in a triangle.

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Remotely Interior

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Compare exterior angles with remote interior angles.

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Shark Attack!

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Find the best path from the inside of a triangle to its sides.

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