Texas Instruments: Navigating Dc by Angles

Use Cabri Jr to copy an angle. The activity is followed by a student-to-student interview/reflection sheet intended to require students to think, talk, and write about why the construction worked. The reflection sheet could be adapted...

In this activity, students investigate the relationship between the exterior angle of a triangle and its remote interior angles. They study the Triangle Sum Theorem and the Exterior Angle Theorem.

Students investigate the relationship between measure of central and inscribed angles in a circle.

Using Cabri Jr. to explore the connection between central and inscribed angles along with their arc measure.

Students explore congruency of vertical angles.

This activity uses Cabri Jr to discover that inscribed angles subtended by the same arc in a circle are congruent.

Students will discover the sum of the interior angles in a triangle using the Cabri Jr. Application.

Students discover properties of interior and exterior angles of convex polygons using the TI-89 and Geometer's Sketchpad.

In this activity, you will construct special segments of a triangle named altitudes, medians, and angle bisectors, Using their definitions. You will look at how an altitude, a median, and an angle bisector divide the area of a triangle....

Identify triangles by their angle measures and side lengths by looking at and measuring angle measures and side lengths. Use Cabri Jr. to construct various triangles, then manipulate the construction to create the 6 types of triangles,...