Circle Geometry
Nov 14, 2015
Circle Geometry
CircumferenceThe entire outside of a circleduh.
Arcs: Major and MinorA section of the circumference is an arc.The shorter arc AB is the minor arc.The longer arc AB is the major arc.AB
Inquiring Mindshttp://staff.argyll.epsb.ca/jreed/math20p/circles/inscribed_central.htm
Inscribed Angle Propertieshttp://staff.argyll.epsb.ca/jreed/math20p/circles/inscribed_inscribed.htmBTEAI
Inscribed Angle PropertiesSo what would angles y and x be?What circle properties are we using?
Inscribed Angle Properties#1 Inscribed Angles with the same endpoints are identical, and #2 a central angle is double the inscribed angle with the same endpoints.Remember: The interior angles of a circle total 360.
Inscribed Angle PropertiesWhere can we start?Solve x? y? zWhat could we do to start filling in the angles?
501203060703020204040Heres our angle bank:
Step 1: 2 different RadiiWhere do we start? What would be step #1?
Step 1: 2 different Radii18
Step 2: Determine QA18
Step 2: Determine QA1833.94
Step 2: Determine PA1833.94
Step 2: Determine PA1833.9416.97
Step 1: Determine y33.9416.97
Step 1: Determine y16.9716.9733.94
Assignment TimePg. 410: 3-6, 11, 12, 15