Biggie Size It (Triangle)

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Explore changes in the perimeter and area of a triangle when you increase its size.

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Squaring with Squares

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Draw area connections to the Pythagorean Theorem.

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Capture the Flag

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Locate the best starting position in a game of capture the flag.

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Find the Hidden Treasure

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Determine a shortcut to find a treasure inside of a triangle.

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Circles & Triangles

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Find the relationship between the circumradius of a triangle and the radii of the circles that pass through the triangle’s vertices.

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Intersecting Circles

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Examine the relationship between two secants that pass through the intersections of two circles.

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Circling the Coordinate Plane

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Given coordinates of the endpoints of a circle’s diameter, find the circle’s area.

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Equation of a Circle

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Find the equation of a circle based on its radius, center, and locus of points.

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Intersecting Chords

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Determine a relationship between segments formed by the intersection of two chords of a circle.

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Optimizing Triangles Using Radii

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Find the triangles with maximum and minimum area if two sides of the triangle are determined by radii of the circle.

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