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Mathematics 20 Online
OpenStudy (anonymous):

Given: ΔABC is a right triangle. Prove: a^2 + b^2 = c^2

OpenStudy (anonymous):

OpenStudy (anonymous):

OpenStudy (anonymous):

Which is not a justification for the proof?

OpenStudy (anonymous):

A.) Addition Property of equality B.) Pythagorean Theorem C.) Pieces of Right triangles similarity theorem D.) Cross product property

OpenStudy (anonymous):

@iGreen

OpenStudy (anonymous):

I think its D. @iGreen

OpenStudy (anonymous):

C'mon ppl damn it Dx

OpenStudy (anonymous):

@radar @Abhisar

OpenStudy (alexandervonhumboldt2):

easy let me prove

OpenStudy (alexandervonhumboldt2):

Draw right triangle ABC by Construction. 2) Draw altitude CD with length h by Construction. 3) Let segment AC = b, segment CB = a, segment AB = c, segment AD = x, and segment DB = y by Labeling. 4) y + x = c by the Segment Addition Postulate. 5) c/a = a/y and c/b = b/x by the Pieces of Right Triangles Similarity Theorem. 6) b² = cx by the Cross Product Property and a² = cy by the Cross Product Property. 7) a² + b² = cy + b² by the Addition Property of Equality. 8) a² + b² = cy + cx by Substitution. 9) a² + b² = c times the quantity y + x, by the Distributive Property of Equality. 10) a² + b² = c * c by Substitution. 11) a² + b² = c² by Multiplication.]

OpenStudy (alexandervonhumboldt2):

B is not used in the proof

OpenStudy (alexandervonhumboldt2):

because we are proving it we cannot use it in the rpoof

OpenStudy (alexandervonhumboldt2):

eveery thing listed is used in the proof exept of pyghogorian theorem

OpenStudy (alexandervonhumboldt2):

@coolaidpower

OpenStudy (anonymous):

oh ok so the answer would be B then because they did not use Pythagorean theorem?

OpenStudy (anonymous):

@AlexandervonHumboldt2

OpenStudy (alexandervonhumboldt2):

yes also as we prove it we cannot use t in proof. as you look thought the proof you will se we use everightig exept pyghogorian theorem. so yeah B

OpenStudy (anonymous):

ok man thank you!

OpenStudy (alexandervonhumboldt2):

bye

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