Circle Thereoms Flashcards
1
Q
Which parts of the circle meets at 90°
A
The Tangent and the radius
2
Q
How many radius form an isosceles triangle
A
2 radii
3
Q
What passes through the centre of the circle
A
The perpendicular bisector
4
Q
What is the angle at the centre of the circle
A
Twice the angle at the circumference
5
Q
How many degrees are angles in a semi circle
A
90
6
Q
What are angles in the same segment
A
Equal
7
Q
Where do opposite angles add up to 180
A
Cyclic quadrilateral
8
Q
What are tangents from the same point
A
The same length
9
Q
What is the alternate segment theorem
A
Angle between a tangent and a chord is always equal to the angle in the opposite segment
10
Q
Area formula
A
Pie x r squared
11
Q
Circumference formula
A
Pie x diameter
12
Q
Arc formula
A
Feta/ 360 x pie x diameter
13
Q
Perimeter formula
A
Feta/ 360 x pie x + y + z
