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Unit Plan
CK-12 Foundation

Ck 12: Exterior Angles Theorem

For Students 9th - 10th
[Free Registration/Login Required] Students explore the concept of the exterior angles theorem by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more...
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eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 4.4 Theorems About Triangles

For Students 9th - 10th Standards
Discover some theorems about triangles.