Document Type

Lesson Plan

Publication Date



Geometric constructions are essential in the production of Technical Drawings which are precise, abstract representations of things. This lesson is part of a set of lessons in which students involved in a CAD based Technical Drawing course, would use both CAD and GSP skills to produce and revise mathematical concepts when producing geometrical constructions. The CAD base drawings are real world applications of the geometrical concepts learned.


Questions, comments or suggestions about this model may be sent to:
Dr. Leigh Little, The College at Brockport

Circumcenter of triangle using (76 kB)
Contains lesson plan and any application files

Tools used

Geometer’s Sketch pad, CAD

Grade Level

10 - 11