Education Technology

Secants and Angles in a Circle

Activity Overview

This activity is designed to allow students to gain an understanding of the relationship between the arcs and angles formed by secants drawn from a common external point outside a circle. It includes an interactive geometry page, some circle problems, and a Euclidean proof.

Before the Activity

See Teacher Notes in Word document. Download the TNS file and make it available to students.

Make copies of the worksheet as needed.

During the Activity

See Student Worksheet and TI-Nspire (.tns) file.

After the Activity

Review student work on the worksheet or in the TNS file.