Identify examples of semi-circles in the environment.

Number: MA.912.G.6.Su.c	Category: Supported
Date Adopted or Revised: 09/07	Standard: Circles : Define and understand ideas related to circles (radius, tangent, chord, etc.). Perform constructions, and prove theorems related to circles. Find measures of arcs and angles related to them, as well as measures of circumference and area. Relate geometry to algebra by finding the equation of a circle in the coordinate plane.