Copy of opening a cube

Author:丁明智, Arthur Lee

A cube is divided into 6 congruent right pyramids. Drag the yellow dot to 'close' the cube. This shows the volume of a square base pyramid with height equal to half its base edge.

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Congruent Figures
Segment Addition Postulate (Mild Questions)
繪畫垂直線
Squares Question
Parabolas, Lines and Nomograms

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Graphing on Graph Paper - Sine Function
smiley
day 112
คณิตคิดเร็ว
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Parabola
Congruence
Statistics
Linear Programming or Linear Optimization
Logic