Rectangling the circular region

Author:Jonathan Holland

The shaded region A lying between concentric circular sectors, has the same area as the rectangle B, whose length is equal to the dashed median of A, and whose height is equal to the thickness of A.

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繪畫垂直線
Congruent Sides & Angles in △s: Exploration
Function art 3D - waiting shed (v2)
Midpoint Theorem (V2): Integer Solutions
Squaring a Rectangle (PST Version)

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Moving the robot
circle
Ejercicio 19
Perspective
Demo: dashed trace

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Tangent Function
Coordinates
Geometric Transformations
Tree Diagrams
Sine