in the circle.
First we use to find the measureof angle.Therefore,.because they are inscribed angles and intercept the same arc
.In ,.LessonSummary
In this sectionwe learnedaboutinscribedangles.We foundthat an inscribedangleis half the measureof
the arc it intercepts.We also learnedsomecorollariesrelatedto inscribedanglesand foundthat if two in-
scribedanglesinterceptthe samearc, they are congruent.
LessonExercises
- In , , and. Find the measureof eachangle:
a.b.c.d.