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

areaA=r2

circumference

C=2r or C=d

HW Check

HW Check

M3U3D8 Practice with Relationships of Circles,

Angles, Arcs, and SectorsOBJ: 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 Arc Area 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 incircumscribed about

diameter

semicircle

180˚90˚

An angle inscribed in a semicircle=90˚.

ClassworkM3U3D7 Inscribed and

Circumscribed Guided Practice

HomeworkM3U3D7 Inscribed and

Circumscribed Independent Practice

Review Packet tomorrow, Review Packet tomorrow, Take Home Test due Thursday!Take Home Test due Thursday!

Arcs and Angles Practice