Learn how to determine the measure of a semi circle

The video tutorial explains how to find the measure of arc CDA by determining if it is a minor or major arc. For minor arcs, the central angle is used, while for major arcs, the central angle is subtracted from 360 degrees. The tutorial highlights that if line AC is the diameter, the arc from C to A is a semicircle, measuring 180 degrees.

What steps would you take to determine the measure of angle CDA?

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If line AC is the diameter, what can you say about the arc from C to A?

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