Finding Unknown Angles Using Addition and Subtraction
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Objective
I can solve word problems to find missing angle measures by adding or subtracting angles on a diagram.
Part 1 of 3
Warm-up video
Unknown Channel · 5:00
We don't generate video — this one is by Unknown 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 3
Practice
7 questions
Explain in your own words how you can find a missing angle measure if you know the total angle measure and the measure of one of the smaller angles that make up the total angle.
Draw a diagram showing two angles that add up to 90°. Label one angle as 30°. What is the measure of the other angle?
Part 3 of 3
Exit ticket
Quick comprehension check
“Two angles form a larger angle. One angle measures 25°. The larger angle measures 68°. What is the measure of the other angle? A student cut a piece of paper into two angles. One angle measures 42° and the other angle measures 57°. If they put the two angles together, what is the measure of the total angle they create?”
Sample answer included in the free materials
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