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Mathematics 11 Online
OpenStudy (anonymous):

Given: m EGF ∠ = 60° and m AGF ∠ = 90°; Prove: m A∠ GB = 30°.

OpenStudy (anonymous):

OpenStudy (anonymous):

notice that <EGB is a straight angle, so <EGB = 180. also, <EGB = <EGF + <FGA + <AGB substitute the givens we have: 180 = 60 + 90 +<AGB solving for <AGB, we have <AGB = 30...

OpenStudy (anonymous):

wait is this using two columed proofs?

OpenStudy (anonymous):

you can make this into a two column proof... just separate the statements with the reasons...

OpenStudy (anonymous):

i dont know any reasons though! im sorry

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