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12-4 Angle Measures & Segment Lengths

12-4 Angle Measures & Segment Lengths

Assessment

Presentation

Mathematics

9th - 12th Grade

Easy

CCSS
HSG.C.A.2, HSG.C.B.5, HSG.C.A.3

Standards-aligned

Created by

Deb Scott

Used 14+ times

FREE Resource

9 Slides • 17 Questions

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Angle Measures & Segment Lengths

By Deb Scott

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Exterior Angle

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Interior Angle

  • An interior angle has a vertex inside the circle and is formed by two intersecting chords/secants.

  • The measure of an interior angle is half the sum of its corresponding arcs.

  • (arc1 + arc2)/2

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With tangents and secants, there is an intersection point OUTSIDE the circle. Formula is half the difference of the arcs.

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The question asks us to find the outside angle C. How can we do that if we're only given one angle?

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Angle Measures & Segment Lengths

By Deb Scott

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