A-B-C is a
40-120-20-degree triangle. D is a point on AC so that AD = BC. Find the
measure of angle ADB.
Only elementary geometry is allowed (no trigonometry).
See also:
Original problem
1389.
Geometric art is a form of art based on the use and application of geometric figures. A geometric figure is any set or combination of points, lines, surfaces and solids.
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Geometry Problems
Ten problems: 1381-1390
Geometric Art
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