circle theorums Flashcards
1
Q
A
the angle at the centre is twice the angle at the circumference
2
Q
A
the angel in a semi circle is 90 degrees
3
Q
A
angles subtended by the same arc are equal
4
Q
A
opposite angles in a cyclic quadrilateral sum to 180 degrees
5
Q
A
tangents from a point are equal
6
Q
A
a tangent is perpendicular to a radius
7
Q
A
angles in alternate segments are equal
