Grade 4 Math · Spatial Sense

Classify angles

Classify an angle as acute, right, straight, or obtuse from its measure or from a real-world example. Unlimited questions, five difficulty levels, and a full worked solution every time — free.

Practice this skill Curriculum: G4-E2.4

Try one

An angle measures 180 deg. Is it acute, right, obtuse, or straight?

  • right
  • obtuse
  • acute
  • straight

Answer: straight

See one solved, step by step

An angle measures 180 deg. Is it acute, right, obtuse, or straight?

  • right
  • acute
  • straight
  • obtuse
📘 Worked solution
1180°180 deg is exactly 180 deg -- a straight line -- so it's a straight angle.
2Classification: straightThat measure fits the definition of a straight angle.

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