Big Ideas Math Integrated I, 2016
BI
Big Ideas Math Integrated I, 2016 View details
4. Proving Statements about Segments and Angles
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Exercise 10 Page 472

The symbol ≅ means congruent.

Symmetric Property of Angle Congruence

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The statement ∠ K ≅ ∠ P tells us that ∠ K is congruent with ∠ P.

The next part of the statement says that this can be rearranged so that the left-hand side is on the right-hand side, and vice-versa. Since we are working with angles, this is called the Symmetric Property of Angle Congruence.