Angle in Semicircle Flashcards

The angle subtended by a diameter at the circumference of a circle is always 90° (a right angle).

A straight line passing through the centre of the circle, connecting two points on the circumference.

An angle formed at a point on the circumference by two lines drawn from the ends of a chord or diameter.

The angle formed at the circumference by a diameter is always a right angle (90°).

The point equidistant from all points on the circumference of the circle.

A straight line joining two points on the circumference of a circle.

A quadrilateral where all four vertices lie on the circumference of a circle.

The opposite angles of a cyclic quadrilateral add up to 180°.

A straight line that touches the circle at exactly one point.

The angle subtended at the centre of a circle is twice the angle subtended at the circumference by the same arc.