Circles

Question 1

Answer 1

Central Angle

Def of Central Angle or Central Angle = arc

Question 2

Answer 2

Inscribed Angle

Inscribed angle = 1/2 arc

Question 3

Answer 3

Overlapping Arcs

Inscribed angles that intercept same arc are equal

Question 4

Answer 4

Inscribed Quadrilaterals

Inscribed Quadrilateral, opposite sides supplementary

Question 5

Answer 5

Intersecting Chords or Secants (on the interior) ANGLES

Linear pairs supplementary

Question 6

Answer 6

Intersecting Tangents & Chords/Secants (on the circle)

Circle = 360 degrees

Linear pairs supplementary

Inscribed angle = 1/2 arc

Question 7

Answer 7

Intersecting Secants (on the Exterior)

Big - Small

Question 8

(arrow)

Answer 8

Intersecting Secants & Tangents (on the Exterior)

Hypothetical semi-circle (if pass through diameter)

Big - Small

Question 9

Answer 9

Intersecting Tangents (on the Exterior)

Circle= 360 degrees

Question 10

Answer 10

Tangents

pythagorean theorem

Question 11

Answer 11

Two Tangents from the same External Point

Question 12

Answer 12

Intersecting Chords or Secants (on the interior)

Question 13

Answer 13

Intersecting Secants (on the Exterior)

Question 14

Answer 14

Question 15

Area

Answer 15

A= pi x radius(squared)

Question 16

Circumference

Answer 16

C= 2 x pi (squared)

C= pi x diameter

Question 17

Arc Length

Answer 17

Question 18

Sector Area

Answer 18