Unit 1 - Lesson 16 - Grade 8: Illustrative Mathmatics
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Algebra I, Algebra II, Geometry, Math
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8 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
Look at angles EAB, BAC, and CAD. Without measuring, write what you think is the sum of the measures of these angles. Explain or show your reasoning.
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
Is the measure of angle EAB equal to the measure of any angle in triangle ABC? If so, which one? If not, how do you know?
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
Is the measure of angle CAD equal to the measure of any angle in triangle ABC? If so, which one? If not, how do you know?
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
What is Explain how you know.
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
Use your answer to explain why a + b + c = 180.
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6.
OPEN ENDED QUESTION
3 mins • 1 pt
Explain why your argument will work for any triangle: that is, explain why the sum of the angle measures in any triangle is 180°.
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7.
OPEN ENDED QUESTION
3 mins • 1 pt
Given that angle BAC measures 53 degrees, find as many other angle measures as you can.
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