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.
Any TI graphing calculator can be programmed using a language called TI-Basic. In this blog post, learn how to get started coding with your TI calculator.
Explore teaching strategies to help students succeed on the ACT® math test using TI technology.
TI Connect™TI Connect™ CE
TI Connectivity CableUnit-to-Unit link cables
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 1995-2019 Texas Instruments Incorporated. All rights reserved.