Find where to buy the TI-84 Plus CE graphing calculator in a variety of bold, fun colors.
Download free 90-day trial versions of the most popular TI software and handheld emulators.
Bring a new dimension of learning to your classroom with activities that put math in motion.
Explore teaching strategies for synchronous and asynchronous learning with TI technology.
Drive deeper, more relevant understanding of science in middle grades and high school.
TI Connect™TI Connect™ CE
Students measure interior and exterior angles of a triangle and make conjectures about their relationships.
Students should construct a triangle using the Triangle tool and label the vertices A, B, and C.
With Cabri™ Jr., students construct a triangle and measure the three interior angles. With the Calculate tools they make a conjecture about the sum of the angles for all triangles, acute, obtuse, and right.
Using the triangle students have already constructed, they will construct a line and measure the exterior angle that results from it. Using the Calculate tool again, they will make conjectures about the relationships between interior and exterior angles.
© Copyright 1995-2020 Texas Instruments Incorporated. All rights reserved.