Go Geometry Problems

Online Geometry Problem 9, Art 01. Triangle, Angles, Congruence, 30 Degrees, Auxiliary Lines. PicSketch for iPad

In the figure below, AB = BD = AD, angle ACD = 10º, angle CAD = x and angle CBD = x + 30º. Find x. Try to use elementary geometry (Euclid's Elements.) 

Geometry Problem 09, iPad app PicSketch Artwork, Art 01, Triangle, Angles

See also:
Sketch problem 9, art 02

Original problem 9
Original problem 9, art 00


PicSketch - Pencil Sketch & Drawing Photo Filter Effects
PicSketch by Softease Tech Co., Limited is a photo sketch app for iPhone and iPad, to turn photo into a pencil sketch artwork in a few taps.

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Solution / Comment to Geometry Problem 9
Aug 5, 2014