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The diagram shows 3 points, A, B and C, on a circle, centre O. AC is a diameter of the circle. B Angle BAO is aº and angle BCO is yº What is the size of angle ABC?
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The diagram shows 3 points, A, B and C, on a circle, centre O.

AC is a diameter of the circle.
B
Angle BAO is aº and angle BCO is yº
What is the size of angle ABC?

The diagram shows 3 points, A, B and C, on a circle, centre O. AC is a diameter of-example-1
User Joe Rinehart
by
3.0k points

1 Answer

1 vote

Answer:

90 degrees

Explanation:

the centre angle of the triangle is 180°.
ABC is its circumference angle, that is half the centre one

User Athom
by
3.8k points
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