Warm-Up

Warm-Up Name, with proper notation, as many examples of each term as you can:

1. Radius2. Diameter3. Chord4. Secant5. Tangent6. Central Angle7. Inscribed Angle

Acc Math 1 April 10th Turn in homework – pages 3-6

FOCUS: MA1G4: What are the parts of a circle?MA1G4.b and d: How are arcs and angles in circles related?

Skills practice 5.11. C2. I3. D4. E5. J6. L7. B8. F9. A

10.K11.H12.G13.Circle T/ H, J, L, K/ T14.Circle X/ A, B, C/ X15.PX, PW, PY16.WY17.VX18.AC, AD, AB

Central Angles and Arcs of Circles GO

Vocabulary Word

Definition Example

Central Angle

Semicircle

Arc

Minor Arc

Major Arc

Intercepted Arc

Inscribed Angle

Congruent Arcs

Central and Inscribed Angles

B

O

CA B

O

C

A

B

C

O

A

D

Arc Degree Central Angle Inscribed Angle

Circle 1 42

Circle 2 66

Circle 3 180

ACAC

Inscribed Angles GO

Inscribed angle = ______________ Angles intercepting the same arc are _______

Intercepted arc = _______________ Give an example: _________________

Give an example: _______________

Inscribed Angles GO

An angle inscribed in a semicircle = ______ Opposite angles in an inscribed quadrilateral are always __________________