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Activity 21 Shows The Different Classification Of Triangles

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Activity 21 emphasizes the different classifications of triangles. Triangles are three-sided polygons classified by the length of each side and the measurement of each angle. An Equilateral triangle has sides that are all the same length. Isosceles triangles have at least two congruent sides. The length of the sides of a Scalene triangle are incongruent. A Right triangle has one ninety-degree angle and two forty-five degree angles to equal one hundred and eighty degrees. An Acute triangle has three angles smaller than ninety-degrees. An Obtuse angle has one angle greater than ninety-degrees. Students need to understand that a right triangle can be isosceles or scalene, but not equilateral. Activity 21: was an excellent review of triangles.

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