Chang's Math blog
Compilation of math questions by pupils
Sunday, September 25, 2011
P5 area of triangle and geometry
Triangle ABE --> 1/2 x 6 x 3
Triangle BCD --> 1/2 x 14 x 3
( .... 6+8 = 14 )
Tri ABE / Tri BCE --> 6/14 =
3/7
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