Angles in the opposite segments are equal., Tangents from a point meet at right angles., A radius perpendicular to chord bisects that chord., Angles in the same segment are equal., The angle at the centre is double the angle at the circumference., Opposite angles in a cyclic quadrilateral add up to 180°., Angles in a semi-circle equal 90°., Two tangents from a point are equal in length.,



Tabela de classificação

Alternar o modelo


Restaurar arquivo salvo automaticamente: ?