In the figure ABCD is a square and the measure of angle EAF is 45 degrees. Prove that EF = BE + DF.
![Problem 1076: Square, 45 Degrees, Angle, Sum, Distance Geometry Problem: Square, 45 degrees](p1076-square-45-degrees-distance-sum-geometry-math.gif)
Mind Map: George Pólya's 1945 book,
"How to Solve It"
George Pólya's 1945 book "How to Solve It, A new aspect of
Mathematical Method", is a book describing methods of problem
solving. It suggests the following steps when solving a
mathematical problem: (1) First, you have to understand the
problem. (2) After understanding, then make a plan. (3) Carry
out the plan. (4) Look back on your work. How could it be
better?
A mind map is a diagram used to visually organize information, knowledge, concepts or ideas.
![College Geometry: Mind Map: George Pólya's 1945 book, How to Solve It](../problem-solving-polya-mind-map.gif)
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