Properties of Circles

How many chords are in the figure?

• 1

• 2

• 3

• 0

Is this a minor arc or major

• Minor

• Major

Why is angle OAB =90^o ?

• tangents to circle

• sum of angles in quadrilateral

• tangents to circle from external point

• line from external point of tangents bisect angle formed between radius of circle

Why is angle ABC + angle ADC = 180⁰ ?

• angles in opposite segments are supplementary

• angles in same segment

• angle at centre is twice angle at circumference

• sum of angles on a straight line

Why is angle BAC =90⁰ ?

• tangents to circle

• tangents to circle from external point

• right angle in semi-circle

• angles in same segment

Solve for x.

• 29

• 33

• 41.5

• 50

A segment whose endpoints lie on a circle is a _______.

• tangent

• chord

• diameter

• secant

Find the measure of major arc PQ (the question mark).

• 260°

• 100°

• 25°

• 130°

What kind of line is LP?

• Tangent

• Secant

• Chord

• Diameter

Solve for x.

• 140

• 89

• 51

• 38