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Adding the Angles in a Triangle: IM 8.1.15

作者：GeoGebra Classroom Activities
“Adding the Angles in a Triangle” from IM Grade 8 by Open Up Resources and Illustrative Mathematics. Licensed under the Creative Commons Attribution 4.0 license.
Adding the Angles in a Triangle: IM 8.1.15

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IM 8.1.15 Lesson: Adding the Angles in a Triangle

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