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Khan Academy (English - US curriculum)
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Khan Academy (English - US curriculum)
Math by grade
Eureka Math/EngageNY
8th grade (Eureka Math/EngageNY)
Module 2: The concept of congruence
Topic C: Congruence and angle relationships
Triangle angle challenge problem 2
Triangle angle challenge problem 2
Example of angle hunting!
License: CC BY-NC-SA by Khan Academy