Circle Theroms

Question 1

What is the correlation of the angle at the centre of a circle and at the circumference?

Answer 1

The angle at the centre of a circle is twice the angle at the circumference.

Question 2

What are angles at the same segment?

Answer 2

Angles in the same segment are equal.

Question 3

What is the angle in a semi-circle?

Answer 3

The angle in a semi-circle is 90°.

Question 4

Opposite angles in a cyclical quadrilateral (quadrilateral in a circle) add up to what?

Answer 4

Opposite angles in a cyclic quadrilateral add up to 180°.

Question 5

What does the angle between the tangent and the radius add up to?

Answer 5

The angle between the tangent and the radius is 90°.

Question 6

What is the correlation of angle between the tangent and a chord to the angle in the alternate segement?

Answer 6

The angle between the tangent and a chord is equal to the angle in the alternate segment.

Question 7

What are tangents from the same point to a circe?

Answer 7

Tangents from the samepoint to a circle are equal length.

Question 8

What does the perpendicular bisector of a chord go through in a circle?

Answer 8

The perpendicular bisector of a chord goes through the center of the circle.