index of entries on compass and straightedge constructions

The following entries discuss compass and straightedge constructions:

• geometric constructions by Euclid

• perpendicular bisector

• midpoint

• compass and straightedge construction of perpendicular

• compass and straightedge construction of angle bisector

• compass and straightedge construction of regular triangle

• compass and straightedge construction of duplicating an angle

• compass and straightedge construction of center of given circle

• construct the center of a given circle

• construction of tangent

• circumcenter ()

• compass and straightedge construction of parallel line

• compass and straightedge construction of square

• $n$-section of line segment with compass and straightedge (http://planetmath.org/NSectionOfLineSegmentWithCompassAndStraightedge)

• circle with given center and given radius

• compass and straightedge construction of similar triangles

• compass and straightedge construction of geometric mean

• construction of fourth proportional

• construction of central proportional

• compass and straightedge construction of inverse point

• compass and straightedge construction of regular pentagon

• construction of regular $2n$-gon from regular $n$-gon (http://planetmath.org/ConstructionOfRegular2nGonFromRegularNGon)

• compass and straightedge construction (http://planetmath.org/CompassAndStraightedgeConstruction)

• constructible numbers

• theorem on constructible numbers

• theorem on constructible angles

• criterion for constructibility of regular polygon

• classical problems of constructibility