Reasoning about angles in a triangle
Authored by Ray Okot
Mathematics
6th - 8th Grade
CCSS covered
Used 1+ times
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10 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Rotate triangle ABC 180° around the midpoint of side AC. Label the new vertex D.
Rotate triangle ABC 180° around the midpoint of side AB. Label the new vertex E.
Look at angles 3, 4, and 7. Without measuring, write what you think is the sum of the measures of these angles. Explain or show your reasoning.
Rotate triangle ABC 180° around the midpoint of side AC. Label the new vertex D.
Rotate triangle ABC 180° around the midpoint of side AB. Label the new vertex E.
Look at angles 3, 4, and 7. Without measuring, write what you think is the sum of the measures of these angles. Explain or show your reasoning.
Tags
CCSS.HSG.CO.A.4
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Rotate triangle ABC 180° around the midpoint of side AB. Label the new vertex E.
Is the measure of angle 3 equal to the measure of any angle in triangle ABC? If so, which one? If not, how do you know? Use numbers to represent angles.
Tags
CCSS.8.G.A.3
CCSS.HSG.CO.A.5
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Rotate triangle ABC 180° around the midpoint of side AC. Label the new vertex D.
Is the measure of angle 7 equal to the measure of any angle in triangle ABC? If so, which one? If not, how do you know? Use numbers to represent angles.
Rotate triangle ABC 180° around the midpoint of side AC. Label the new vertex D.
Is the measure of angle 7 equal to the measure of any angle in triangle ABC? If so, which one? If not, how do you know? Use numbers to represent angles.
Tags
CCSS.8.G.A.3
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Is it always true that the sum of the angles in a triangle is 180°?
Tags
CCSS.8.G.A.5
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Find the measure of the missing angle in the Figure shown
Tags
CCSS.8.G.A.5
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Find the measure of the missing angle in Figure 2
Tags
CCSS.8.G.A.5
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Find the measure of the missing angle in Figure 3
Tags
CCSS.8.G.A.5
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