Geo Lab - Circles Day 1

Master circle geometry! Identify parts, solve for arcs, and find radii & diameters.

Question #1 Write the correct word to describe each segment. chord diameter radius Question #2 Describe each red arc as major, minor, or a semi-circle minor semi-circle major Question #3 Match each of the following Sum of the arcs of a circle total this many degrees 360 degrees A diameter is equivalent to 2 times the radius The central angle of a semi-circle totals this many degrees 180 degrees A radius is equivalent to Half the diameter If a central angle measures 90 degrees, the measure of its corresponding arc measures 90 degrees Fill in each of the blanks based on the diagram below Measure of arc BC = 52 degreesMeasure of angle EAD = 38 degreesMeasure of arc EFB = 180 degreesMeasure of angle EAF = 120 degreesMeasure of arc DBF = 202 degrees AB is a diameter of circle O. If AB = 9x - 12 and BO = 2x + 4, find the length of the radius. 4 24 12 8 Find m∠SPQ m∠SPQ = 146 degrees Find the measure of arc CFD Measure of arc CFD = 306 degrees Find the value of x. x = -3 Find the value of x: x = 8