# Arcs of a circle

### Arcs of a circle

#### Lessons

• 1.
Find the length of the arc in red.
a)

b)

c)

• 2.
In the following circle, AD is diameter and BC $\bot$ EF, and the radius is 7. Find the measures of:
a)
$arc AB$

b)
$arc ABE$

c)
$arc AEC$

d)
$\angle BFD$

• 3.
On circle D, arcAB= 105°, arcBC= 140° and arcABC= 245°. Point E is on the circle D too and arcCE= 145°. Explain what E must be on ArcAB.