Quadrilateral Names and Angle Sum (Interior and Exterior)

Topic:Angles, Parallelogram, Quadrilaterals, Rectangle, Rhombus, Square, Trapezoid

How to name quadrilaterals. The conditions for naming quadrilaterals. Proof the sum of interior (inside) angles = 360 deg. Proof the other three angles equal exterior angle.

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Pythagorean Day
Intercepts in 3D
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Transformaciones usando coordenadas
Forming Similar Triangles

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Concavity of a function
Minimizing Triangle Perimeter
New Graph
Wallpaper Symmetry Group p1

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Limits
Expected Value
Similar Triangles
Surface
Variance