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Area of a Triangle - Three Formulas

Author:John Hansen

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Billard V5.2 and V6
Prism Drawn in 2-Point Perspective
z`]]
bewijs stelling van Pythagoras
Average Value of a Function

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Modelling with Trig Functions
Mechanical device for oval drawing - Stanley’s oograph
Concept of the area function in FTC1
SAS-ASA-SSS and SSA?
Four Strikes

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Bar Chart or Bar Graph
Logarithmic Functions
Division
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