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.

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Geometry Problems

Ten problems: 1391-1400

Visual Index

Open Problems

All Problems

Circle

Diameter

Perpendicular lines

90 Degrees Angle

Tangent Line

Collinear Points

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