Geometry Problem 1397: Circle, Diameter, Tangent, Secant, 90 Degrees Angle, Perpendicular, Collinear Points

Proposition

The figure below shows a circle with diameter AB. Line CD is a tangent at D (C on AB extended). Line EA is perpendicular to AB (E on BD extended) and BF is perpendicular to AB (F on AD extended). Prove that the points E, F, and C are collinear.

Geometry Problem 1397: Circle, Diameter, Tangent, Secant, 90 Degrees Angle, Perpendicular, Collinear Points, Tutor
 

 


Sketch of Problem 1397 using iPad Apps


Sketch of problem 1397 using iPad Apps


Circular Patterns of Problem 1397 using iPad Apps


Circular patterns of problem 1397 using iPad Apps, software

Geometric Art using Mobile Apps

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. A mobile app or mobile application software is a computer program designed to run on smartphones and tablet computers.