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| 1. |
O is the centre of the circle find x if angle aob 80 degree |
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Answer» ong>ANSWER: ∠AOC + 80° = 180° [LINEAR PAIR PROPERTY]
∠AOC = 100°
NOW,
OA = OC
→ ∠OAC = ∠OCA = x° [say]
now.
∠OAC + ∠OCA +∠AOC = 180°
x + x + 100 = 180°
2X = 80°
x = 40 Step-by-step explanation: |
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