Expressions, equations, and relationships

6.8(A)

Triangle Angles and Side Lengths

Extend previous knowledge of triangles and their properties to include the sum of angles of a triangle, the relationship between the lengths of sides and measures of angles in a triangle, and determining when three lengths form a triangle.

Part of The student applies mathematical process standards to use geometry to represent relationships and solve problems

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Intro

Triangle Rules

By the end of this lesson, you will find a missing angle in a triangle, decide which side is longest, and tell whether three lengths can even make a triangle. Think about a triangle-shaped yield sign you might see on your street.