Lesson 9: Triangle Angle-Sum Theorem

Before you have access to this lesson from the links below, click on “Materials” to see what’s covered. The exercise is expected to last for not more than 1 hour 3o minutes, and please, be ready to complete this lesson in ONE session. If you haven’t signed up for the IXL SKILLS package, the temporal login info that you purchase from the link below, will be valid for 48 hours. 

For temporal access: Click here.

Warmup

Activity #1 (30 minutes)

1. Topic: Triangle Angle-Sum Theorem(Applet).

2. Explainer Video: Triangle Angle-Sum Theorem.

Practice Exercise (30 minutes).

Topic: Triangle Angle-Sum Theorem.

Quiz Time – (Two sets: 30 minutes).

Topic: Triangle Angle-Sum Theorem (to be taken while you are logged in).

  1. An applet.
  2. An explainer video on "Triangle Angle-Sum Theorem".
  3. A skills exercise from the IXL website on "Triangle Angle-Sum Theorem". The questions exhibit an increasing order of difficulty. 
  4. Two sets of quizzes on "Triangle Angle-Sum Theorem". The questions exhibit an increasing order of difficulty, and an average score of 80% expected.