Texas Essential Knowledge and Skills Teaching Resources

Math 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:

  • (1) illustrate the measure of an angle as the part of a circle whose center is at the vertex of the angle that is "cut out" by the rays of the angle. Angle measures are limited to whole numbers;
    • (A) illustrate degrees as the units used to measure an angle, where 1/360 of any circle is one degree and an angle that "cuts" n/360 out of any circle whose center is at the angle's vertex has a measure of n degrees. Angle measures are limited to whole numbers;
    • (B) determine the approximate measures of angles in degrees to the nearest whole number using a protractor;
    • (C) draw an angle with a given measure; and
    • (D) determine the measure of an unknown angle formed by two non-overlapping adjacent angles given one or both angle measures.

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