The figure below shows a right triangle ABC (angle B = 90 degree). The
incircle I is tangent to AB at D. The excircle E corresponding to BC is
tangent to BC and AC extended at F and G, respectively. Prove that D, F,
and G are collinear.

Geometry Problems

Ten problems: 1401-1410

Visual Index

Open Problems

All Problems

Triangle

Circle

Incircle

Excircle

Tangent Line

Perpendicular lines

Collinear Points

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