This Triangle Inequality lesson plan also includes:
Students discover that the sum of the lengths of any two sides of a triangle must be greater than the third side. They are shown how a triangle is formed using three strips such as that the triangle is seen inside the strips.
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New Review Triangle Inequality Theorem: Lesson
Can any three lengths make a triangle? One of the videos in a playlist on basic geometry introduces the Triangle Inequality Theorem. Using three given lengths, the presentation illustrates the restrictions on lengths of any side of a...
5 mins 6th - 12th Math CCSS: Adaptable
New Review Altitudes: Examples
Find the location of altitudes—from any elevation! The video presents the definition of an altitude of a triangle. By drawing examples, the segment of a larger geometry playlist highlights the location of altitudes of various triangle...
4 mins 6th - 11th Math CCSS: Adaptable
Determine If Given Measurements Will Allow You to Create the Appropriate Shape
The Triangle Inequality Theorem states that the third side of a triangle must be smaller than the sum of the other two sides. The video goes through one example to show a triangle that can be drawn using the given sides.
3 mins 6th - 8th Math CCSS: Designed
What's the Subtraction Property of Inequality?
Most of the rules that are used to solve equations can be used to solve inequalities. Take a look at the subtraction property of inequality. What is performed on one side of the inequality must be performed on the other side of the...
1 min 6th - 9th Math