A heptagram, septagram, septegram or septogram is a seven-point star drawn with seven straight strokes.

The name heptagram combines a numeral prefix, hepta-, with the Greek suffix -gram.

The -gram suffix derives from γραμμῆ (grammē) meaning a line.

[1] In general, a heptagram is any self-intersecting heptagon (7-sided polygon).

This is the smallest star polygon that can be drawn in two forms, as irreducible fractions.