dress123 dress123
  • 16-03-2018
  • Mathematics
contestada

Help me solve for A and B!

Help me solve for A and B class=

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altavistard
altavistard altavistard
  • 16-03-2018
Here we have one large triangle with two smaller triangles drawn inside.  The two smaller triangles are similar.

Thus, a/12 = 12/16, or   a/12 = 3/4, or 4a=36, or a = 9.  

Find b in the same way:  b/20 = 9/12 (and so on).
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