Geometry chapter 9 section 2
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Geometry Chapter 9 Section 2. Arcs and Angles. Central Angle. An angle with the center point as the vertex. Minor Arc. G. Minor Arc. Name a Minor Arc with its two endpoints. J. Major Arc. G. Major Arc. J. Name a Major Arc with an endpoint, a point on the circle and another endpoint.

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Geometry Chapter 9 Section 2

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Geometry chapter 9 section 2

Geometry Chapter 9 Section 2

Arcs and Angles


Central angle

Central Angle

  • An angle with the center point as the vertex


Minor arc

Minor Arc

G

Minor Arc

Name a Minor Arc with its two endpoints

J


Major arc

Major Arc

G

Major Arc

J

Name a Major Arc with an endpoint, a point on the circle and another endpoint

K


Geometry chapter 9 section 2

Arc

  • Measure of an arc = the measure of the degrees of the central angle that intercepts that arc


Geometry chapter 9 section 2

Angle EWF = 380

Arc EF = 380

Arc EGF = 3600 - 380

F

E

W

J

G


Geometry chapter 9 section 2

Angle EWF = 380

GF is a Diameter

Find arc EW

Find arc GJE

F

E

W

J

G


Geometry chapter 9 section 2

JF = 2(EF) – 5

JG = 2(EF)

EG = 2(JG)

Find EF

F

E

W

J

G


Concentric circles

Concentric Circles

  • 2 circles 1 center point


Circles that have congruent radii are congruent circles

Circles that have congruent radii are congruent circles


Arc length

Arc Length

  • The distance of an arc


Find the arc length

Find the Arc Length


Find the arc length1

Find the Arc Length


Find the arc length2

Find the Arc Length


Find the arc length3

Find the Arc Length


Do now

Do Now

  • Page 455 problems 19 - 42


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