Circle Theorms Flashcards
1
Q
Radius and tangent
A
When a radius meets a tangent, the angle will always be 90º
2
Q
2 tangents
A
From a point outside a circle 2 tangents can be drawn. From this point they touch the circle the 2 tangents are equal in length
3
Q
Angle at the middle and at the edge?
A
The angle subtended at the center is twice the angle made at the cicumfrance
4
Q
Semicircle
A
The angle in a semicircle is a right angle
5
Q
Segments
A
Angles in the same segment are equal
6
Q
Theorm
A
Alternate segment theorem
7
Q
Quadrilateral
A
Opposite angles in a cyclic quadrilateral add up to 180º
