Acute Right & Obtuse Triangles

T.I.P.S.

Students must be able to use what they know about right angles which measure exactly 90° to identify three types of triangles, acute, right, and obtuse.

Example

Landyn is going to teach her classmates about triangles that are named by their angles. What are the key identifying characteristics of acute, right, and obtuse triangles? Draw an example of each and share your thinking. Hint  Possible Solution 

TEKS

Supporting Standard 4.6 Geometry and measurement. The student applies mathematical process standards to analyze geometric attributes in order to develop generalizations about their properties. The student is expected to: (C) apply knowledge of right angles to identify acute, right, and obtuse triangles

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