Exterior Angle Theorem
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Objective
I can apply the exterior angle theorem to solve problems involving missing angle measures in triangles.
Part 1 of 4
Warm-up video
Miacademy & MiaPrep Learning Channel · 6:38Vetted channel
We don't generate video — this one is by Miacademy & MiaPrep Learning Channel on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
The exterior angle theorem states that the measure of an exterior angle of a triangle is equal to the sum of the two remote interior angles.
- 2
An exterior angle is formed by extending one side of a triangle.
- 3
A remote interior angle is an angle inside the triangle that is not adjacent to the exterior angle.
Part 3 of 4
Practice
9 questions
Define 'exterior angle' in your own words.
What does the exterior angle theorem state?
Part 4 of 4
Exit ticket
Quick comprehension check
“In a triangle, the two remote interior angles measure 30° and 50°. Draw a picture of this and label each given angle as well as the exterior angle. What is the measure of the exterior angle?”
Sample answer included in the free materials
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