Menu
Search
Search

Online College Courses

Online College Courses

All About Our Courses

Free Educational Resources

Teachers

Teachers

Classroom Resources
FREE Professional Development
Succeed with any tool, any platform, any software with PD courses from Teacher Professional Development
Students

Students

ACT Test Prep
Homework Help
Fun Self-Discovery Tools
+
Tri-Angles

Tri-Angles

Rating:
Rating
(3)
    • (0)
    • (1)
    • (1)
    • (1)
    • (0)
Author: Rachel Kaplan
Description:

Our objectives for this packet include:
-Understanding the sum of angles in a triangle
-The exterior angle theorem and how to use it
-Solving for angle measures algebraically, using these concepts

Through a powerpoint and several walkthrough videos, we will learn many properties about angles in a triangle and how to use them to solve problems.

(more)
See More

Try Our College Algebra Course. For FREE.

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to over 2,000 colleges and universities.*

Begin Free Trial
No credit card required

28 Sophia partners guarantee credit transfer.

253 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 21 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial

The Exterior Angle Theorem

What interior and exterior angles are (parts of a triangle), as well as an explanation of the exterior angle theorem.

open player in a new window

The Sum of the Angles of a Triangle

Why angles of a triangle always add up to 180.

open player in a new window

Using the Exterior Angle Theorem to Solve

A step by step example of how to solve for angles of a triangle given algebraically, using the exterior angle theorem.

open player in a new window

Solving a Triangle Given 2 Angles Algebraically

How to solve a triangle's angles when two angles are given algebraically and one is given in degree form.

open player in a new window

Solving a Triangle Given 3 Angles Algebraically

A step-by-step problem of how to solve for the angles of a triangle if all three are given algebraically.

open player in a new window
Get your feet wet or dive right in Create Account
© 2017 SOPHIA Learning, LLC. SOPHIA is a registered trademark of SOPHIA Learning, LLC.