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This page provides a list of educational videos related to Area of Trapezoids. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Area of Trapezoids.
Area of a Trapezoid - YourTeacher.com - Geometry Help
By yourteachermathhelp
For a complete lesson on area of a trapezoid go to http://www.yourteacher.com - 1000+ online math lessons featuring a personal math teacher inside every lesson! In this lesson students learn the formula for the area of a trapezoid and are asked to solve problems using this formula. Note that right triangle formulas and trigonometry are used extensively in the problems in this lesson.
Area of a Trapezoid | MathHelp.com
By MathHelp.com
This lesson covers the definition of a circle and the radius of a circle. Students learn the definitions of a circle, a radius, a chord, a diameter, a secant, a tangent, congruent circles, concentric circles, an inscribed circle, and a circumscribed circle. Students are then asked to identify or draw these figures in given problems.
Perimeter Word Problems | MathHelp.com
By MathHelp.com
This lesson covers the area of a trapezoid. Students learn that a trapezoid is a quadrilateral with one pair of parallel sides, and the formula for the area of a trapezoid is 1/2 times (base 1 + base 2) times height. For example, the area of a trapezoid that has bases of 10 centimeters and 12 centimeters and a height of 8 centimeters is 1/2 times (10 + 12) times 8, which simplifies to 1/2 times 22 times 8, or 11 times 8, which is 88 square centimeters.
Triangles
By MathPlanetVideos
Find out whether the triangles are right, isosceles, acute, scalene, obtuse or equilateral
Area of a triangle problem using formula 1/2 x ab x Sin(C) - YouTube
By mattam66
Area of a triangle problem using formula 1/2 x ab x Sin(C) - YouTube
Inverse Right Triangle Trigonometry
By kthomp271828
Inverse trig functions are used to find missing angles rather than missing sides. This video explains how to use inverse trig to find a missing angle.
Triangle Similarity - AA SSS SAS & AAA Postulates, Proving Similar Triangles, Two Column Proofs
By The Organic Chemistry Tutor
This geometry video tutorial provides a basic introduction into triangle similarity. it explains how to use two column proofs in order to prove if two triangles are similar using the mostly the AA postulates. Other triangle similarity postulates mentioned are the AAA, SSS, and SAS postulates. Theorems used in this video include the base angle theorem, theorems associated with parallel lines, alternate interior angle theorem, vertical angles, reflexive property, definition of an altitude, right angle congruence, and more. This geometry video contains plenty of examples and practice problems on triangle similarity.
3,4,5 Triangle Construction With A Compass
By Jennifer Jasensky
In this short video, students will learn how to create a 3,4,5 triangle using a compass. This video is meant for Math Connections year 2.
Congruent triangles
By MathPlanetVideos
Find the values of x and y so that the triangles are congruent.
Triangle inequality theorem | Perimeter, area, and volume | Geometry | Khan Academy
By Khan Academy
Salman Khan offers his intuition behind the triangle inequality theorem during this six-minute video lesson.
How to Apply Postulate 13 to Similar Triangles
By Khan Academy
Video uses an electronic black board with different colored pens. This video is an introduction to similar triangles. The person discusses the meaning of the term similar then goes on to discuss similar triangles (they have all the same angles), and why they are considered similar (ratio of corresponding sides is the same). Video then gives examples to help students understand the terms used and how to find similar angles. Good quality video. Good for middle elementary and middle school students.
