Home Geometry Mind Map Problems All problems Visual Index Problems Art Gallery 501510 Post a solution By Antonio Gutierrez
Problem 509: Triangle, 120 Degrees, Angles, Congruence, Mind Map.
Level: High School, College, SAT Prep.
The drawing shows a triangle ABC with the angle ABC equal to 120
degrees and AD = BC. If angle C = 2x and angle ADB = 3x, find
x.
Mind Map: "How to Solve It, A new aspect of Mathematical Method"
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? Mind Map Help. To see a note: Hover over a yellow note button. To Fold/Unfold: click a branch. To Pan: click and drag the map canvas.
Problem Solving. Activate Flash plugin or Javascript and
reload to view the Mind Map of How to Solve It, Interactive Mind Map, Elearning.

Recent Additions
Geometry problem solving
Geometry problem solving is one of the most
challenging skills for students to learn. When a
problem requires auxiliary construction, the
difficulty of the problem increases drastically,
perhaps because deciding which construction to
make is an illstructured problem. By
“construction,” we mean adding geometric figures
(points, lines, planes) to a problem figure that
wasn’t mentioned as "given."
