Circle theorems Flashcards
1
Q
Circle theorem about semi circles and spotted with a diameter
A
The angle in a semicircle is 90
2
Q
Circle theorem about angle at centre and angle at circumference
A
Angle at centre is twice the angle at the circumference
Arrow shape
3
Q
Circle theorem about same segments
A
Angles in the same segment are equal
Bowtie
4
Q
Circle theorem about cyclic quadrilaterals
A
Opposite angles in a cyclic quadrilateral add to 180
5
Q
Circle theorem about tangents and radius
A
Where a tangent meets a radius a right angle is formed
6
Q
Circle theorem about two tangents
A
2 tangents meet at equal lengths
7
Q
Circle theorem about alternate segments
A
Angles in alternate segments are equal
Triangle and radius
8
Q
Formula for pressure
A
P=F/A
