01.20.2017. Friday
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 Geometry Two-dimensional geometric shapes⦿ Rhombus⦿ Parallelogram⦿ Trapezoid⦿ Kite⦿ Circle⦿ Circular sector⦿ Circular segment⦿ Area of a Triangle⦿ Squere⦿ Rectangle Three-dimensional geometric shapes⦿ Cube⦿ Sphere⦿ Cylinder⦿ Cone⦿ Prism⦿ Pyramide⦿ Platonic solids Trigonometry⦿ Law of Sines⦿ Law of Cosines⦿ Trygonometry Identities of same angle⦿ Identities for the sum and difference of two angles⦿ Trigonometric identities of double angles⦿ Trigonometric identities of half angles⦿ Sum and difference of trigonometric functions⦿ Trigonometry of right triangles Vectors⦿ Scalar Product of Vectors⦿ Vector Product of Vectors Analytical Geometry 2D⦿ Distance between two points⦿ Circle⦿ Linear equation⦿ Ellipse

Three-dimensional geometric shapes

Pyramide

 Area $A={A}_{1}+{A}_{2}=ab+a{h}_{a}+b{h}_{b}$ Base Area ${A}_{1}=a·b$ Side Area ${A}_{2}=\frac{2a{h}_{a}}{2}+\frac{2b{h}_{b}}{2}=a{h}_{a}+b{h}_{b}$ Side Triangles ${h}_{a}=\sqrt{{\left(\frac{b}{2}\right)}^{2}+{H}^{2}},\phantom{\rule{thickmathspace}{0ex}}{h}_{b}=\sqrt{{\left(\frac{a}{2}\right)}^{2}+{H}^{2}}$ Volume $V=\frac{{A}_{1}·H}{3}=\frac{abH}{3}$