complete the proof that ( mangle twx + mangle utw = 180^{circ} ).

QUESTION IMAGE

$complete the proof that ( mangle twx + mangle utw = 180^{circ} ).$

Question

complete the proof that ( mangle twx + mangle utw = 180^{circ} ).

Explanation:

Brief Explanations

The proof uses the Substitution Property. Since ∠TWX ≅ ∠RTU (step 2), their measures are equal. Substitute m∠TWX for m∠RTU in the linear pair sum (step 3) to get the final statement.

Answer:

Substitution