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Perimeter and Area of Triangles

There are 11 videos in this category and 0 videos in 0 subcategories.

Category Videos
Not Right For WatchKnowLearn
Ages: 11 - 16
1293 Views:
Finding Area of a Triangle
From YouTube, produced by YourTeacher.com
Students learn the formula for the area of a triangle, 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.
August 20, 2009 at 03:22 PM
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Not Right For WatchKnowLearn
Ages: 14 - 18
1060 Views:
Proof of Heron's Formula
From YouTube, produced by Sal Khan
In this video, the insructor explores and demonsrates the proof of Heron's Formula. The instructor demonstrates with computer software.
March 17, 2010 at 08:23 PM
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Not Right For WatchKnowLearn
Ages: 14 - 18
1009 Views:
Heron's Formula, Part 1
From YouTube, produced by Sal Khan
This video demonstrates how to use Heron's Formula to determine the area of a triangle while only knowing the lengths of the sides.
March 17, 2010 at 08:16 PM
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Not Right For WatchKnowLearn
Ages: 16 - 18
980 Views:
Part 2 of the Proof of Heron's Formula
From YouTube, produced by SalKhan
Video shows that the expression in part 1 is identical to Heron's Formula.  This video demonstrates how to use Heron's Formula to determine the area of a triangle while only knowing the lengths of the sides.
March 18, 2010 at 08:04 PM
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Not Right For WatchKnowLearn
Ages: 11 - 15
1488 Views:
How to Find the Area of a Triangle
From YouTube, produced by ExpertVillage
In this video, there is a teacher explaining the area of a triangle is the base times the height divided by two. Students can find the area of a triangle with tips from a math teacher.  (01:20)
July 11, 2009 at 11:05 AM
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Not Right For WatchKnowLearn
Ages: 12 - 18
1168 Views:
How to Calculate Area of a Triangle
From eHow, produced by 'Teacher Jon'
How to Calculate Area of a Triangle. Part of the series: Construction Math for Building Materials. Learn how to calculate area of a triangle in this one-minute video. Jon holds a Bachelors of Science in Education and Human Sciences degree, with an en... [more]
January 12, 2011 at 08:25 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
1113 Views:
How to Find the Perimeter of a Triangle
From 5min, produced by VideoJug
This is a very brief tutorial that focuses on solving the perimeter of a triangle. The teacher uses a small whiteboard for instruction. (01:51)
April 17, 2011 at 12:40 PM
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Not Right For WatchKnowLearn
Ages: 10 - 16
1099 Views:
Finding the Area of Triangles
From YouTube, produced by Math Made Easy
Instructor walks the learner through the process for finding the area of a triangle.  Example includes using the formula (bh)/2 and gives an explanation for how to label the answer.
April 13, 2010 at 10:35 PM
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Not Right For WatchKnowLearn
Ages: 11 - 16
1017 Views:
Finding the Area of a Triangle
From YouTube, produced by Davitily
The instructor uses an electronic chalkboard to demonstrate how to find the area of a triangle.  One example is modeled using a step by step approach to find the area when given a height and base length.
April 28, 2010 at 08:56 PM
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Not Right For WatchKnowLearn
Ages: 11 - 18
698 Views:
Sin Cos Tan - Basic Trigonometry
From YouTube, produced by YourTeacher.com
This 3:34 long video reviews how these problems are solved using a lecture format. The video may have to be stopped at times to add depth to the fast moving lecture.
November 12, 2011 at 10:44 AM
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