Sophia Learning
Sophia: Area of Quadrilaterals: Taking' It to the Streets
This lesson provides a video that shows examples of various quadrilaterals in the real world. A notes sheet follows describing the characteristics of each quadrilateral and how to find the area of several figures. [3:37]
Math Mammoth
Math Mammoth: Parallelograms
This video explores the properties of parallelograms. Demonstrates how to measure their lines and angles and how to draw one, and presents drawing problems for students to try on their own. [10:09]
Virtual Nerd
Virtual Nerd: How Do You Classify Quadrilaterals?
Quadrilaterals are figures with four sides and there are many different types. Watch this tutorial and try to figure out the name for any given quadrilateral. [11:03]
Khan Academy
Khan Academy: Geometry: Proof: Opposite Sides of Parallelogram Congruent
Demonstrates how to prove that the opposite sides of a parallelogram are congruent based on knowledge of the special angles created when parallel lines are cut by a transversal and the triangle congruency postulates. [8:30]
Khan Academy
Khan Academy: Geometry: Proof: Opposite Angles of Parallelogram Congruent
This video tutorial demonstrates how to prove that the opposite angles of a parallelogram are congruent based on knowledge of the special angles created when parallel lines are cut by a transversal. [4:08]
Khan Academy
Khan Academy: Geometry: Proof: Diagonals of Parallelogram Bisect Each Other
Demonstrates how to prove that the diagonals of a parallelogram bisect each other based on knowledge of the special angles created when parallel lines are cut by a transversal and the triangle congruency postulates. [9:06]
Khan Academy
Khan Academy: Quadrilateral Types
Learn to identify quadrilaterals such as kites, trapezoids, parallelograms, rhombuses, rectangles, and squares by line and angle type.
Khan Academy
Khan Academy: Kites as a Geometric Shape
Sal discusses a special type of quadrilateral, the kite.
Sophia Learning
Sophia: Double Diagonals of a Parallelogram: Lesson 4
This lesson cover the concept that that when both diagonals are drawn in on a parallelogram, two pairs of congruent triangles are formed. It is 4 of 5 in the series titled "Double Diagonals of a Parallelogram."
Sophia Learning
Sophia: Double Diagonals of a Parallelogram: Lesson 1
This lesson cover the concept that that when both diagonals are drawn in on a parallelogram, two pairs of congruent triangles are formed. It is 1 of 5 in the series titled "Double Diagonals of a Parallelogram."
Sophia Learning
Sophia: Double Diagonals of a Parallelogram
This lesson cover the concept that that when both diagonals are drawn in on a parallelogram, two pairs of congruent triangles are formed.
Sophia Learning
Sophia: Coordinate Geometry of Parallelograms: Lesson 6
This lesson [7:55] will demonstrate how to use slope, midpoint, and distance formulas to determine from the coordinates of the vertices if a quadrilateral is a parallelogram in a coordinate plane. It is 6 of 6 in the series titled...
Other
Corbettmaths: Names of Quadrilaterals Video 2
Video tutorial discusses 6 types of quadrilaterals: square, rectangle, rhombus, parallelogram, trapezium, and kite. [3:21]
Expansion Learning
Expansion Learning: Shape Basics (Part Three)
Video provides students with an explanation of the basic shapes of hexagon, trapezoid, and parallelogram.