Angles and Arcs Measurement

Vin explores circle geometry by examining angles and arcs. He starts by labeling angles COD and AFB, then calculates the measure of arc DE. Next, he finds angle P using tangent properties and angle ACE using isosceles triangle properties. He determines the measure of arc AB using intersecting chords and concludes with calculating angle ACD using the inscribed angle theorem.

What is the measure of angle COD?

• 120 degrees

• 180 degrees

• 90 degrees

• 60 degrees

What is the measure of angle AFB?

• 60 degrees

• 90 degrees

• 120 degrees

• 100 degrees

What is the measure of arc CD?

• 180 degrees

• 90 degrees

• 60 degrees

• 120 degrees

What is the measure of angle COD?

• 180 degrees

• 60 degrees

• 90 degrees

• 120 degrees

What is the measure of angle AFB?

• 120 degrees

• 60 degrees

• 90 degrees

• 100 degrees

What is the measure of arc CD?

• 120 degrees

• 60 degrees

• 180 degrees

• 90 degrees

What is the sum of arcs DE and CD?

• 120 degrees

• 180 degrees

• 240 degrees

• 300 degrees

What is the measure of arc DE?

• 90 degrees

• 120 degrees

• 180 degrees

• 60 degrees

What is the sum of arcs DE and CD?

• 180 degrees

• 240 degrees

• 120 degrees

• 300 degrees

What is the measure of arc DE?

• 90 degrees

• 60 degrees

• 120 degrees

• 180 degrees