Mathematics (2019) Grade(s): 4

MA19.4.24

Identify an angle as a geometric shape formed wherever two rays share a common endpoint.

Unpacked Content

Knowledge

Students know:
  • Angles are geometric shapes formed when two rays share a common endpoint.
  • How to draw points, lines, line segments, and rays

Skills

Students are able to:
  • Identify an angle as two rays with a common endpoint.

Understanding

Students understand that:
  • angles are geometric shapes made of two rays that are infinite in length and are measured with reference to a circle with its center at the common endpoint of the rays.

Vocabulary

  • Angle
  • Ray
  • Endpoint
  • Geometric shape
  • Vertex
  • Line
  • Point
  • Line segment
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