Triangle q r s is shown with exterior angles. line r q extends through point d. line q r extends through point e. line q s extends through point c.
which angle has a measure equal to the sum of m∠sqr and m∠qrs?

∠rsc
∠sre
∠dqs
∠qsr

step-by-step explanation:

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis:

you could deduce the conclusion directly using the facts pertaining to the specific situation.

hope this .