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## 'Isosceles' printed from http://nrich.maths.org/

Prove that a triangle with sides of length 5, 5 and 6 has the same area as a triangle with sides of length 5, 5 and 8.

Find other pairs of isosceles triangles which are not congruent but have equal areas.

How many isosceles triangles have an area of 12 square units?

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