Math antics - area


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I.41) parallelogram is double of a triangle if base are common and in same parallels, proof


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How to find the area of a parallelogram

Review of how to find the area of a parallelogram and compare it to the area of a rectangle. Created for t&l 390, spring 2012. Credits: mathematical reasoning.



Quadrilateral where both diagonals bisect each other is a parallelogram (theorem and proof)


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Diagonals of a parallelogram bisect each other (theorem and proof)


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Quadrilateral having both pairs of opposite sides equal means parallelogram (theorem and proof)


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Area of a triangle is half of base times height - elementary mathematics

This video explains the derivation of formula for area of a triangle, that is, a1/2(b * H) where a area of triangle, blength of base of triangle, h length of height.



Quadrilateral theorem:in a parallelogram opposite sides are equal


Quadrilateral theorem:in a parallelogram opposite sides are equal.



Parallelogram consecutive angles


Parallelogram consecutive angles- the consecutive angles of a parallelogram (the angles that are connected by one side of the parallelogram.



Ex optimization - maximum area of a rectangle inscribed by a parabola

This video provides an example of how to find the rectangle with a maximum area bounded by the x-axis and a quadratic function.