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Angles in and out of the circle

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Angles in and out of the circle - PowerPoint PPT Presentation


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Angles in and out of the circle. O OUT. IN. What we know so far. Central angle = arc Angle ON the circle = ½ arc. Vertex is inside the circle. ARC. A. B. ANGLE. D. C. ARC. Looks like a PLUS sign!. Ex. 1 Find m 1. 93 °. A. B. 1. D. C. 113 °. Ex. 2 Find m QT . N. Q.

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Presentation Transcript
what we know so far
What we know so far
  • Central angle = arc
  • Angle ON the circle = ½ arc
slide5

Vertex is inside the circle

ARC

A

B

ANGLE

D

C

ARC

Looks like a PLUS sign!

slide6

Ex. 1 Find m1.

93°

A

B

1

D

C

113°

slide7

Ex. 2 Find mQT.

N

Q

84o

92o

M

T

ex 3 find x
Ex 3: Find x.

40o

xo

120o

slide9

Vertex is outside the circle

C

ANGLE

small ARC

A

D

LARGE ARC

B

LARGE ARC

LARGE ARC

small ARC

ANGLE

small ARC

ANGLE

ex 4 find m 1
Ex. 4 Find m1.

1

15°

A

D

65°

B

ex 5 find m ab
Ex. 5 Find mAB.

A

27°

70°

B