Online Geometry Problems

Geometry Problem 1074: Quadrilateral, Right Triangle, Angles, 15, 22.5, 30, 90 Degrees. Level: High School, SAT Prep, College, Mathematics Education

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The figure shows a quadrilateral ABCD with angles BAD, BAC, BCA, and ACD equal to 90, 22.5, 30, and 15 degrees, respectively, Find the measure of angle ABD.
This entry contributed by Abdilkadir ALTINTAS and Ayhan YANAGLIBAS).

Infographic Geometry problem: Triangle, Altitudes, Interior Point, Distance, Ratio
 

 


 

When asked how he developed his mathematical abilities so rapidly, he replied "by studying the masters, not their pupils." Abel, Niels Henrik. 1802-1829.

Geometric Art: Hyperbolic Kaleidoscope of problem 1074

Hyperbolic Kaleidoscope of proble 1074

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