Arclength and Circle Properties

How big is angle b?

• 50 degrees

• 60 degrees

• 70 degrees

• 75 degrees

• A

• B

• C

• D

What do we call the blue line?

• Chord

• Circumference

• Radius

• Arc

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

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

• tangent

• chord

• diameter

• secant

What kind of line is LP?

• Tangent

• Secant

• Chord

• Diameter