Lesson 9: Triangle Angle-Sum Theorem

Complete the exercises in this section at your pace. Before you begin, click on “Materials” to verify what’s covered. The Geogebra Activity for this lesson will be created only upon request, and you’ll receive a link in your inbox to join a class in Realtime! Also, if you haven’t signed up for the IXL SKILLS PACKAGE yet, the login credentials you’ll receive from the link below, will expire after 2 days.

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Warmup

Activity #1 (30 minutes)

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

2. Explainer Video: Triangle Angle-Sum Theorem.

Practice Exercise

Topic: Triangle Angle-Sum Theorem.

Quiz Time – (Two sets: 30 minutes each).

Topic: Triangle Angle-Sum Theorem.

  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.