When constructing inscribed polygons how can you be sure the figure inscribed is a regular polygon

Small kingdoms on the iberian peninsula fought to take land back from the moors during which event? the hundred years’ war the wars of the roses the reconquista the great schism

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?

Yesterday i ran 5 miles. today, i ran 3.7 miles. did my percent increase, decrease or is it a percent error? plz i need