**Introduction to Geometry**

Lecture
Plan (Korean)

Geometer's Sketch Pad files: 2004.zip

Euclid's
Elements

Geometry Site organized by University of Tennessee, Knoxville.

Three bar linkage by Cinderella

Dual Theorem of Pappus by Cinderella, a special case

Conic Curve Generaion by Cinderella

Draw tangent lines from a point to a circle (including details in Korean)

Hints on the Midterm
Examination(2004/04/28) (Korean)

Help file for theorem
7.5, page 292 (Korean): harmonic.hwp

Lobachevskii (1792-1856)