4.MD.5a

Grade 4 · Measurement & Data

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.

Official code: CCSS.MATH.CONTENT.4.MD.5a
Short code: 4.MD.5a
Subject: Mathematics
Grade: Grade 4
Domain: Measurement & Data

More Grade 4 Measurement & Data standards

4.MD Measurement and Data 4.MD.1 Know relative sizes of measurement units within one system of units including km, m,... 4.MD.2 Use the four operations to solve word problems involving distances, intervals of time,... 4.MD.3 Apply the area and perimeter formulas for rectangles in real world and mathematical problems. 4.MD.4 Make a line plot to display a data set of measurements in fractions of a unit (1/2,... 4.MD.5 Recognize angles as geometric shapes that are formed wherever two rays share a common... 4.MD.5b An angle that turns through n one-degree angles is said to have an angle measure of n degrees. 4.MD.6 Measure angles in whole-number degrees using a protractor. Sketch angles of specified measure. 4.MD.7 Recognize angle measure as additive. When an angle is decomposed into non-overlapping...

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