Chapter 10: Circles

What is this?

• Chord

• Diameter

• Secant

• Radius

What is this?

• Secant

• Chord

• Tangent

• Diameter

What is this?

• Tangent

• Point of tangency

• Diameter

• Secant

Line m is tangent to ⒸQ if and only if m is perpendicular to QP.

• Tangent Line to Circle Theorem

• External Tangent Congruent Theorem

• Point of Tangent

• Internal Tangent Congruent Theorem

If SR and ST are tangent segments, then SR = ST.

• External Tangent Congruent Theorem

• Internal Tangent Congruent Theorem

• Tangent Line to Circle Theorem

• Point of Tangency

What is this?

• Minor Arc

• Major Arc

What is this

• Minor Arc

• Major Arc

OA OB if and only if AC BD.

• Congruent Circle Theorem

• Congruent Central Angles Theorem

• Similar Circle Theorem

BC = DE if and only if < BAC = <DAE.

• Congruent Central Angles Theorem

• Congruent Circle Theorem

• Similar Circle Theorem

AB = CD if and only if AB = CD

• Congruent Corresponding Chords Theorem

• Perpendicular Chord Bisector Theorem

• Perpendicular Chord Bisector Converse