Geometry

NC.4.G.1 – Draw and identify points, lines, line segments, rays, angles, and perpendicular and parallel lines.

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We can use a protractor to measure angles

When you rotate two rays you get angles

All angles have a vertex, vertex

(verse)

Right angle looks like an “L” and measure 90 degrees

Acute angles are less than 90 degrees

Obtuse angles are more than 90 degrees but less than 180