
Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion 
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December 9th, 2016, 08:30 AM  #1 
Newbie Joined: Aug 2016 From: SantosSP / BRASIL Posts: 15 Thanks: 0  I need help!
ABC is a triangle with sides measuring AC = 13 cm, BC = 12 cm and AB = 5 cm and is the midpoint of the side AC¯. Consider the line segment MN¯ perpendicular to AC¯, where N is a side point CB¯. Determine the perimeter, in cm, of the AMNB quad. 
December 9th, 2016, 11:33 AM  #2 
Math Team Joined: Jul 2011 From: Texas Posts: 2,549 Thanks: 1260 
the small triangle NMC is similar to the large triangle ABC ... corresponding sides are proportional.
