Angles: Acute, Obtuse, Straight, Right, Reflex

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Questions and Answers

Berapakah ukuran sudut yang lebih kecil dari sudut lurus?

  • 90°
  • 360°
  • 180°
  • 0° (correct)

Apa yang dilakukan oleh dua garis yang membentuk sudut lurus?

  • Membentuk garis paralel
  • Membentuk garis tegak lurus (correct)
  • Membentuk sudut siku-siku
  • Membentuk lingkaran

Berapakah ukuran sudut yang dilambangkan sebagai sudut tumpul?

  • 150° (correct)
  • 120°
  • 210°
  • 90°

Sudut apa yang mempunyai ukuran antara 0° dan 90°?

<p>Sudut tajam (C)</p> Signup and view all the answers

Apa yang dilambangkan oleh sudut refleks?

<p>Sudut yang lebih besar dari sudut lurus (A)</p> Signup and view all the answers

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Study Notes

Angles

Acute Angles

  • An acute angle is an angle whose measure is between 0° and 90°.
  • Acute angles are less than a right angle.
  • Examples: 30°, 60°, 75°

Obtuse Angles

  • An obtuse angle is an angle whose measure is between 90° and 180°.
  • Obtuse angles are greater than a right angle but less than a straight angle.
  • Examples: 100°, 120°, 150°

Straight Angles

  • A straight angle is an angle whose measure is 180°.
  • Straight angles are equivalent to a straight line.
  • Example: 180°

Right Angles

  • A right angle is an angle whose measure is 90°.
  • Right angles are formed by two perpendicular lines.
  • Example: 90°

Reflex Angles

  • A reflex angle is an angle whose measure is between 180° and 360°.
  • Reflex angles are greater than a straight angle.
  • Examples: 210°, 240°, 300°

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