Learning Domain: Measurement and Data

Standard: Geometric measurement: understand concepts of angle and measure angles

Indicator: Recognize angle measure as additive. When an angle is decomposed into non-overlapping parts, the angle measure of the whole is the sum of the angle measures of the parts. Solve addition and subtraction problems to find unknown angles on a diagram in real world and mathematical problems, e.g., by using an equation with a symbol for the unknown angle measure.

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Learning Domain: Geometry

Standard: Classify two-dimensional figures into categories based on their properties

Indicator: Understand that attributes belonging to a category of two-dimensional figures also belong to all subcategories of that category. For example, all rectangles have four right angles and squares are rectangles, so all squares have four right angles.

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Learning Domain: Measurement and Data

Standard: Geometric measurement: understand concepts of angle and measure angles

Indicator: 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,"ť and can be used to measure angles.

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Learning Domain: Measurement and Data

Standard: Geometric measurement: understand concepts of angle and measure angles

Indicator: An angle that turns through n one-degree angles is said to have an angle measure of n degrees.

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Learning Domain: Geometry

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

Indicator: Draw points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines. Identify these in two-dimensional figures.

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