One Height Over Another

Geometry Level 3

Two identical, orange equilateral triangles are each positioned in a large, black triangle such that

  • in the left diagram, the corresponding sides of the two triangles are parallel to each other;
  • in the right diagram, the orange triangle fits in the top corner of the black triangle.

Then, we find that three trapezoids with respective heights h1,h2,h3h_1, h_2, h_3 can be formed in each black triangle, as shown.

True or False?

The two black triangles have equal areas.


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