# Module 4: Angle Measure And Plane Figures

Contributed By
UnboundEd
Subjects
Mathematics
Appears In

Introduction to points, lines, line segments, rays, and angles.

16 Instructional Days (16 Hours)

##### Description

This 20-day module introduces points, lines, line segments, rays, and angles, as well as the relationships between them. Students construct, recognize, and define these geometric objects before using their new knowledge and understanding to classify figures and solve problems. With angle measure playing a key role in their work throughout the module, students learn how to create and measure angles, as well as create and solve equations to find unknown angle measures. In these problems, where the unknown angle is represented by a letter, students explore both measuring the unknown angle with a protractor and reasoning through the solving of an equation. Through decomposition and composition activities as well as an exploration of symmetry, students recognize specific attributes present in two-dimensional figures. They further develop their understanding of these attributes as they classify two-dimensional figures based on them.

The Following Topics Are Included within this Module:

• Topic A:  Lines And Angles
• Topic B:  Angle Measurement
• Topic C:  Addition of Angle Measures
• Topic D:  Two-Dimensional Figures And Symmetry

Lessons are organized under each of the topic areas.