Circles (Edexcel A-Level Mathematics): Flashcards

Any angle subtended by the diameter is a right angle.

A triangle inscribed in a circle with one side as a diameter.

Angle ACB is a right angle ($90$ degrees).

Draw the circle and the inscribed triangle.

The angle in a semicircle is a right angle.

Angles subtended by a diameter are right angles.

Angles OCA and OCB subtend the same arc AB.

$AOC + ABC = 180$ degrees.

To solve problems involving circles and right triangles.

Check if $AC^2 + BC^2 = AB^2$.