A Survey of Right Angles in Convex Pentagons

A regular pentagon, of course, has no right angles, but irregular pentagons can have one, two, or three (but not four, nor five). There are two varieties for both two and three right angles in pentagons -- the right angles can be consecutive, or non-consecutive.

mg.metric geometry - Determining a convex hyperbolic pentagon by

Pentagon: Definition, Shape, Types, Properties, and Formula

Consider the number of angles of a convex polygon and the number

Polyhedra, tessellations, and more.

Mathematics

cards

Polyhedra, tessellations, and more.

Exterior Angles of Convex Polygons – Opinions Nobody Asked For

22, October, 2013

Mathematics

The exterior angles of a (convex) polygon always add up to 2π

Monohedral convex pentagonal tile, type 15 (OpenSCAD) by Stone Age

Mathematics, Free Full-Text