We are given a circle with intersecting chords $AC$ and $BD$. The measure of arc $AB$ is $41^\circ$ and the measure of arc $CD$ is $59^\circ$. We are asked to find the measure of angle $CED$.

GeometryCircle GeometryAngles in a CircleIntersecting ChordsArc Measure
2025/5/9

1. Problem Description

We are given a circle with intersecting chords ACAC and BDBD. The measure of arc ABAB is 4141^\circ and the measure of arc CDCD is 5959^\circ. We are asked to find the measure of angle CEDCED.

2. Solution Steps

The measure of an angle formed by two chords intersecting inside a circle is equal to one-half the sum of the intercepted arcs. In this case, angle CEDCED is formed by the intersection of chords ACAC and BDBD. The intercepted arcs are ABAB and CDCD. Therefore,
mCED=12(mAB^+mCD^)m\angle CED = \frac{1}{2}(m\widehat{AB} + m\widehat{CD})
We are given mAB^=41m\widehat{AB} = 41^\circ and mCD^=59m\widehat{CD} = 59^\circ. Substituting these values into the formula:
mCED=12(41+59)m\angle CED = \frac{1}{2}(41^\circ + 59^\circ)
mCED=12(100)m\angle CED = \frac{1}{2}(100^\circ)
mCED=50m\angle CED = 50^\circ

3. Final Answer

mCED=50m \angle CED = 50^\circ

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