Education Technology

Copying an Angle

Activity Overview

Explore relationships (including congruence and similarity) among classes of two- and three-dimensional geometric objects, make and test conjectures about them, and solve problems involving them.

  • Bullet 1
  • Construct an angle and find it's degree measure.
  • Bullet 2
  • Use the Compass tool to replicate the angle elsewhere on the screen.
  • Bullet 3
  • Try to alter the properties of their construction by moving a vertex.

    Before the Activity

    Students should have access to Cabri Jr.

    During the Activity

    Provide each student with a printed copy of the attached .pdf.

    After the Activity

    Review student results and, as a class, discuss questions that appeared to be more challenging. Re-teach concepts as necessary.