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平行四邊形面積

Author:Anthony OR 柯志明

Topic:Area, Parallelogram

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Mondrian's Puzzle
Area of a Trapezoid
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Classifying Triangles

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MATHS POLYGON BRIDGE
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Comparing Fractions with Unlike Denominators

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Trapezoid
Planes
Arithmetic Operations
Pythagoras or Pythagorean Theorem
Tangent Function

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