CK12 - Geometry

Drawa line to connectpoints and.

Inscribedangle

Inscribedangle

The measureof an exterioranglein a triangleis equal

to the sum of the measuresof the remoteinterioran-

gles.

Substitution

Example 3

Find the measureof angle

.

LessonSummary

In this sectionwe learnedaboutfindingthe measureof anglesformedby chords,secants,and tangents.
We lookedat the relationshipbetweenthe arc measureand the anglesformedby chords,secants,and