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.

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.

This is a short educational video for grades 3-5. Types of triangles by length- equilateral, isosceles, scalene. Types of triangles by angle: acute, right, obtuse. How to calculate perimeter and area of a triangle. (04:15)

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)

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...dorsement in Industrial Technology Education from the University of Nebraska in Lincoln.[more]

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.

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.

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