Big Ideas Math Integrated I, 2016
BI
Big Ideas Math Integrated I, 2016 View details
2. Congruent Polygons
Continue to next subchapter

Exercise 6 Page 599

The naming convention in a congruence statement is very specific.

m∠ M = m∠ X

Practice makes perfect
To complete the statement, we have to pair m∠ M with its congruent corresponding angle in △ XYZ. We can do that by examining the statement △ XYZ ≅ △ MNL. The naming convention in a congruence statement is very specific. Corresponding vertices have to be presented in the same order.

△ XYZ ≅ △ MNL Since they are both in the center position, ∠ M and ∠ X have to be corresponding angles. This means, for the triangles to be congruent, ∠ M and ∠ X must also be congruent making their measures equal. m∠ M = m∠ X