Is This Elegant Property of Equilateral Triangles a New Discovery, or Has It Been Known for Centuries?
Consider the equilateral triangles ABC, CDE, and ADF. G is the midpoint of AB, and H is the midpoint of DE. Prove that the area of triangle ADF is twice that of quadrilateral AGDH.
Midpoints interlace,
Triangles echo their form,
Twice the shape revealed.
Geometry Problems
Open Problems
Visual Index
All Problems
Triangle
Equilateral Triangle
Area
Triangle Area
Quadrilateral
Midpoint
Angle
30-60 degrees
Congruence
Similarity
View or Post a solution