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Parabola (2) - Focus, Directrix

Author:Alison Middelkoop

Parabola - Investigating focus-directrix property

New Resources

Graphing a Circle in Polar Coordinates
Special Right Triangles 30°-60°-90° and 45°-45°-90°
分數化百分數：練習
apec
Tangent in Cartesian and Polar Coordinates

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Fitting the arch
Circle Test
Plotting Points in 3D: Dynamic Illustrator
Circle Theorem 6 - Tangents from a Point to a Circle

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Difference and Slope
Variance
Reflection
Numbers
Trigonometric Functions

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