# 4.MD.C.5, 4.MD.C.6, 4.GA.1 Measuring Angles With Protractor, Identifying Angles

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Common Core Standards
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4.MD.C.5, 4.MD.C.6, 4.GA.1

21 worksheets with an answer key on the following:

Drawing angles when given the degree of the angle.
Measuring angles with a protractor.
Identifying if an angle is obtuse, acute, or a right angle.
PLUS 2 diagrams to help identify angles.

Draw and identify lines and angles, and classify shapes by properties of their lines and angles.

CCSS.MATH.CONTENT.4.G.A.1
Draw points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines. Identify these in two-dimensional figures.

Geometric measurement: understand concepts of angle and measure angles.

CCSS.MATH.CONTENT.4.MD.C.5
Recognize angles as geometric shapes that are formed wherever two rays share a common endpoint, and understand concepts of angle measurement:

CCSS.MATH.CONTENT.4.MD.C.5.A
An angle is measured with reference to a circle with its center at the common endpoint of the rays, by considering the fraction of the circular arc between the points where the two rays intersect the circle. An angle that turns through 1/360 of a circle is called a "one-degree angle," and can be used to measure angles.

CCSS.MATH.CONTENT.4.MD.C.5.B
An angle that turns through n one-degree angles is said to have an angle measure of n degrees.

CCSS.MATH.CONTENT.4.MD.C.6
Measure angles in whole-number degrees using a protractor. Sketch angles of specified measure.

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44 pages
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3 Weeks
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