Students must be able show angle measures as a fractional part of a circle, with a denominator of 360, as long as the vertex of the angle is the center of the circle.
The diagram below illustrates a right angle drawn from the center of the circle. Write a fraction in which the denominator is 360 and the numerator is the measure of the angle. Then, draw and label a similar picture for a straight angle.
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4.7 Geometry and measurement. The student applies mathematical process standards to solve problems involving angles less than or equal to 180 degrees. The student is expected to: