![Geometry Problems, Online Education](h_geometry_problem_810.jpg)
Geometry Problem 109. Angle, Right Triangle, Cevian, 45 Degrees, Mobile
Apps, iPad, iPhone. Level: School, College, Mathematics Education
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In the figure below, given a
right triangle ABC, BD is a cevian to AC, AB = CD, angle ABD = a
, and angle A = 2a. Prove that
x = 45º.
![Geometry Problem Angle, Right Triangle, Cevian. Elearning.](p109_angle_right_triangle.gif)
Art of Geometry Problem 109 using Mobile Apps. Circle
Patterns.
![Art of problem 109 using mobile apps, Mobile Apps, iPad, iPhone](../problem/p109_right_triangle_art_mobile_apps_software_7.jpg)
Art of Geometry Problem 109 in Motion. Circle patterns
Click on the figure below.
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