Sophia Learning
Sophia: Counterexamples: Lesson 7
This lesson will help a learner understand counterexamples. It is 7 of 7 in the series titled "Counterexamples."
Sophia Learning
Sophia: Cpctc: Lesson 2
This lesson will demonstrate the use of CPCTC in triangle congruencey proofs. It is 2 of 4 in the series titled "CPCTC."