Explain it

01.09 — 1 short write-up

A checkpoint, not a test

Two proof reasons, two jobs

One short proof explanation. Two or three sentences is enough. This is not the Canvas practice test.

A proof knows m∠A = m∠B and m∠B = m∠C, then concludes ∠A ≅ ∠C. Which two reasons connect the first facts to the conclusion, and what job does each reason do?

First link the equal measures. Then change an equality of measures into a congruence statement.