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OpenStudy (anonymous):
Triangle ABC is shown below. Given: ΔABC Prove: All three angles of ΔABC add up to 180°. The flow chart with missing reason proves the measures of the interior angles of ΔABC total 180°. Which reason can be used to fill in the numbered blank space? (4 points) Associative Property of Addition Triangle Exterior Angle Theorem Angle Addition Postulate Commutative Property of Addition
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OpenStudy (anonymous):
can anyone help.......
OpenStudy (anonymous):
@mnasr2000 can u help
OpenStudy (anonymous):
Where's the picture?
OpenStudy (anonymous):
thats what im thinking..
OpenStudy (anonymous):
Substitution.
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