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AOB is a straight line. Rays OC and OD split the straight angle into three parts: °, ° and °, as shown. Find the largest of the three angles.

Class 7Complementary and Supplementary AnglesLines and Angles
  • A30°
  • B80°
  • C60°
  • D100°

Step-by-Step Solution

The three angles make a straight angle: . The angles are , so the largest is .
Answer: B) 80°

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