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ZI on an x-ray of the forearm of a seven year old boy showing a fracture of the forearm
ZI on an x-ray of the forearm of a seven year old boy showing a fracture of the forearm
Curated OER
How Do You Find the Area of a Trapezoid?
Trapezoids can be tricky! Break down the process of finding the area of a trapezoid with an engaging math video. Learners explore area formula and shown exactly how to plug in information, solve, and simplify.
Curated OER
What is a Trapezoid?
There are many types of parallelograms, each having specific properties. A trapezoid is a special type of quadrilateral in that it has one pair, and only one pair, of parallel lines. Take a look at some of the other quadrilaterals and...
Curated OER
How Do You Find the Area of a Trapezoid?
Trapezoids can be tricky. Break down the process of finding the area of a trapezoid with this video! Viewers are given information about the area formula and shown exactly how to plug in information, solve, and simplify. This is a...
Curated OER
Area of a Trapezoid
Find the area of a trapezoid. The instructor goes through a discussion of defining a trapezoid, the ways to identify the height and base, and then calculates the area of the trapezoid. This visual exploration should solidify this concept...
Curated OER
What is the Formula for the Area of a Trapezoid?
Make a parallelogram out of two trapezoids to find the area of one trapezoid? Sounds pretty complicated. Well, it's not complicated but there are a lot of steps. The instructor does a pretty good job of diagramming and explaining just...
Curated OER
How Do You Find the Height of a Trapezoid if You Know the Area and Bases?
Find the height of a trapezoid given the values of the two bases and the area. First write out the formula for the area of a trapezoid. Then identify all the variables and match up the given values. Now plug the values into the formula....
Curated OER
What is a Quadrilateral?
What's so special about quadrilaterals? There are five special types, yes, five. Can you name them? The instructor in this video diagrams and illustrates the special types of quadrilaterals and explains what makes each one special.
Curated OER
How Do You Classify Quadrilaterals?
A rectangle, a rhombus, a square, a trapezoid, and a parallelogram, are these quadrilaterals? What are the criteria that make and shape a quadrilateral? It has something to do with parallel sides, congruent sides, and congruent angles....
Khan Academy
Khan Academy: Geometry: Quadrilateral Properties
This video tutorial [5:07] demonstrates how to use the basic properties of parallelograms, rectangles, squares, rhombi, and trapezoids to determine what are the possible ways to name a given geometric shape.
Khan Academy
Khan Academy: Quadrilateral Overview
This video tutorial [8:24] defines what a quadrilateral is and identifies and defines concave quadrilaterals, convex quadrilaterals, trapezoids, parallelgrams, rectangles, rhombi, and squares.
CK-12 Foundation
Ck 12: Elem Math: Overview of Ellipses Trapezoids Rhombi and Polygons
[Free Registration/Login may be required to access all resource tools.] The video draws and defines an ellipse, trapezoid, rhombus, and polygon.
Virtual Nerd
Virtual Nerd: How Do You Find the Area of a Trapezoid?
To find the area of a trapezoid you must have the length and height of each base. Get a better understanding of how to find the area by watching this tutorial. [4:19]
Virtual Nerd
Virtual Nerd: Find the Height of a Trapezoid if You Know the Area and Bases
Use the formula for the area of a trapezoid to find its height. Watch this tutorial to see how it's done. [6:54]
Virtual Nerd
Virtual Nerd: What Is a Trapezoid?
This tutorial introduces trapezoids and takes a look at the special properties needed for a quadrilateral to be called a trapezoid. [5:27]
Virtual Nerd
Virtual Nerd: What Is a Quadrilateral?
Watch this tutorial to learn about quadrilaterals and their special types. [4:52]
Khan Academy
Khan Academy: Area of Trapezoids
Video tutorial demonstrates how to find the area of a trapezoid using the formula A=(a+b)/2 x h. [4:47]
Khan Academy
Khan Academy: Quadrilaterals: Quadrilateral Overview
This video identifies and defines concave quadrilaterals, convex quadrilaterals, trapezoids, parallelgrams, rectangles, rhombi, and squares.
Sophia Learning
Sophia: Classifying Quadrilaterals
This video tutorial describes how to classify quadrilaterals using key characteristics such as parallel sides and right angles. [4:27]
Sophia Learning
Sophia: Classifying Quadrilaterals
Quadrilaterals are explored in this video lesson. The tutorial describes the characteristics of various quadrilaterals. Students can check their understanding with an assessment. [6:17]
Sophia Learning
Sophia: Area of a Trapezoid
In this video, students will determine the area of a trapezoid and assess learning with a quiz. [4:24]
Sophia Learning
Sophia: Area of a Trapezoid
In this video, students will use triangles to determine the area of a trapezoid. Assess learning with a quiz. [7:20]
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]
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]