ocr: POLYGONS D - RIANGLES, squares, all and examples of pentagons are polygons. A regular polygon has sides of equal length and interior angles of equal size. The more sides a regular polygon has, the more it will resemble a circle. There are two kinds of polygon: the convex and the reentrant. The convex polygon has all ofits corners pointing 90° outward. The reentrant polygon has one or more corners pointing inward. DIFFERENT TYPES OF POLYGON TRIANGLE SQUARE PENIMGON OCIMGON REENTRMNT POLYGON SEE ALSO