OER_6.1.12.5

作者：Jason Wofsey

Draw an example of each of the following triangles on the grid. a. A right triangle with an area of 6 square units. b. An acute triangle with an area of 6 square units c. An obtuse triangle with an area of 6 square units.

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Ellipse with Directrices, Eccentricity, and Foci
Exploring Derivatives
Math project
LightSpaceTimeCoords
Vector Addition of Two Vectors (parallelogram rule)

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正方形
垂心
黎曼和（Riemann Sum）
立方（體）
幾何變換

OER_6.1.12.5

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