investment problem   2 videos

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  Trapezoid Arch and Panel Design Problem

  Geometry Polygons

  How to strategize about solving a problem with trapezoidal arches.

  trapezoid arch panel design interior angle equiangular polygon isosceles
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  Parallelogram Properties

  Geometry Polygons

  How to identify all of the special properties of parallelograms and use them to solve problems.

  opposite sides parallel opposite angles same side interior angles diagonals bisect consecutive angles rhombus rectangle square