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Classify Triangles

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Information about Classify Triangles
Education

Published on July 31, 2009

Author: mrferrell

Source: authorstream.com

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How can we classify this triangle? : 1 How can we classify this triangle? Objective : 2 Objective Classify triangles as: Right Obtuse Acute Scalene Isosceles Equilateral Quick Review : 3 Quick Review Acute angle: an angle with a measure greater than 0 degrees, but less than 90 degrees. Obtuse angle: an angle with a measure greater than 90 degrees but less than 180 degrees. Right angle: an angle with a measure of 90 degrees. {Insert Graphic #3} {Insert Graphic #4} Classifying by Angles : 4 Classifying by Angles We can classify angles based on their inside angles three ways: Obtuse Right Acute Obtuse Triangle : 5 Obtuse Triangle An obtuse triangle has one obtuse angle. Right Triangle : 6 Right Triangle A right triangle has one right angle. Acute Triangle : 7 Acute Triangle An acute triangle has three acute angles. Let’s Practice! : 8 Let’s Practice! Suppose someone asks you to make a triangle with the angles: 60°, 60°, and 60° What kind of triangle would you be making? Classifying by Side Lengths : 9 Classifying by Side Lengths We can classify angles based on their side lengths three ways: Equilateral Isosceles Scalene Equilateral Triangle : 10 Equilateral Triangle An equilateral triangle has three sides that all have the same length. Isosceles Triangle : 11 Isosceles Triangle An isosceles triangle has two equal sides. Scalene Triangle : 12 Scalene Triangle A scalene triangle has no sides of equal length. Let’s Practice! : 13 Let’s Practice! Suppose someone asks you to make a triangle with the sides of length: 6 in, 6 in, and 10 in What kind of triangle would you be making? Slide 14: 14 Comparing and Contrasting Triangles : 15 Comparing and Contrasting Triangles

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