Missing Angle Puzzles

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Author:

Jeff Holcomb

Subject:

Mathematics and Statistics

Institution Name:

Individual Authors

Collection:

Individual Authors

Grade Level:

Secondary

Grade Sub-Level:

Middle School, High School

Grades:

Grade 8, Grade 9, Grade 10, Grade 11, Grade 12

Abstract:

This lesson lays some of the ground work for eventually writing two column proofs. In the lesson students use known geometric facts to solve for missing angles. Students are asked to identify the key concepts required for the solution and to record the a path for finding the measure of a particular angle. Key concepts include the sum of the measures of the interior angles of a triangle and quadrilateral, parallel line relationships, and what can and cannot be assumed from a drawing.

Course Type:

Learning Module

Languages:

English

Material Type:

Homework and Assignments, Lecture Notes

Media Format:

Downloadable docs

Conditions of Use:

Creative Commons Attribution-Noncommercial-Share Alike 3.0