Rectangles – Properties of Parallelograms, Special Quadrilaterals – Geometry

This geometry video tutorial provides a basic introduction into the properties of special quadrilaterals and parallelograms such as rectangles. It explains how to determine the length of an unknown segment as well as the diagonal length of a rectangle. It contains plenty of examples and practice problems. Opposite sides of rectangles are parallel and congruent just like a parallelogram. the diagonals are equal and they bisect each other. All angles of a rectangle are right angles.

Polygons:

Angles of Regular Polygons:

Quadrilaterals:

Parallelograms:

Isosceles Trapezoids:

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The Rhombus:

Kites:

Proving Parallelograms:

Proving a Quadrilateral Is a Kite:

Proving a Quadrilateral Is a Rhombus:

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Proving Isosceles Trapezoids:

2 Column Proofs – Quadrilateral:

Skew Lines:

Points, Lines, Planes, & Segments:

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