Blue + Green = Turquoise

Geometry Level 1

ABCD is a unit square, with E the midpoint of AB and F the midpoint of CD. Draw the isosceles triangles ABF and DEC, which intersect at points G and H. What is the area of the diamond-shaped quadrilateral EGFH?

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Blue + Green = Turquoise

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 6 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.