Angle between the tangent and a chord
Drag the points to see what happens to the angles.
The angle between the tangent and a chord is equal to the angle in the alternate segment.
Equal chords are equidistant from the centre
The the perpendicular bisector of a chord
Angles at a point add up to 360°
Vertically opposite angles are equal
Alternate angles are equal
Ed's Circle Challenge
Enlargement task 1
Relation between angles formed at centre and perimeter of circle
תנועה 265 משימה 3 שוש
Analysis project 1 (symmetric difference quotient)
Nomogram: Linear Function as Composition
GCSE Circle Theorems