In your own words…… What is it called when we find the “space” inside a circle? What is the formula used to find the “space”? What is it called when we.

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In your own words…… What is it called when we find the “space” inside a circle? What is the formula used to find the “space”? What is it called when we find the “distance” around a circle? What is the formula used to find the “distance”? M3U3D8 Warm Up area A=  r 2 circumference C=2  r or C=  d

HW Check

M3U3D8 Practice with Relationships of Circles, Angles, Arcs, and Sectors OBJ: Identify and describe relationships among inscribed angles, radii, and chords. Include the relationship between central, inscribed, and circumscribed angles; inscribed angles on a diameter are right angles; the radius of a circle is perpendicular to the tangent where the radius intersects the circle. G-C.2

FYI: Length of ArcArea of Sector

supplementary 360˚ 120˚ 105˚ 75˚ Opposite angles of an inscribed quadrilateral are supplementary.

A triangle inside a circle, a pentagon inside a circle, a circle inside a pentagon etc

inscribed in circumscribed about diameter semicircle 180˚ 90˚ An angle inscribed in a semicircle=90˚.

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