Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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Transcribed Image Text:### Geometry Problem: Angle Determination in a Circle
**Problem Statement:**
Point \( O \) is the center of the circle. Determine \( m \angle BD \).
**Diagram Explanation:**
The given diagram is a circle with center \( O \). The circle has four labeled points on its circumference: \( A \), \( B \), \( C \), and \( D \). The points are positioned such that:
- \( \angle AOB \) is a straight line passing through the center \( O \).
- \( \overline{OC} \) is a radius that forms a right angle (\(90^\circ\)) with \( \overline{AB} \).
- There is an angle \( \angle DOC \) marked as \( 120^\circ \).
**Options:**
A. \( 120^\circ \)
B. \( 90^\circ \)
C. \( 150^\circ \)
D. \( 60^\circ \)
**Graphical Representation:**
- The circle is centered at \( O \), with a diameter \( \overline{AB} \).
- Radius \( \overline{OC} \) forms a 90-degree angle with \( \overline{AB} \), making \( \overline{OC} \) perpendicular to \( \overline{AB} \).
- The angle formed by connecting \( D \rightarrow O \rightarrow C \) is \( 120^\circ \).
**Answer the problem by analyzing the angles and relationships within the circle.**
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