Circle Geometry Flashcards
Which angle is twice the angel at the centre of the circumference
The angle at the centre of the circle
The angle at the centre is ____ the angle at the circumference
Twice
The angle in a semi circle is?
90
Angles in the same segment (all triangles drawn from a chord) are
Equal
Opposite angles in a cyclic quadrilateral add up to
180
What is the alternate segment theorem
The angle between a tangent and a chord is always equal to the angle in the opposite segment
A tangent and a radius meet at…
90
Tangents from the same point are
The same length
The perpendicular bisector of a chord passes through the _____ of the circle
Centre
What is a chord
Any line drawn across a circle
Two radii form….
An isosceles triangle
A tangent is…
A straight line that touches the outside of a circle
A circumference is…
The distance all the way around a circle
A sector is…
A wedge shaped area cut from the centre
Segments are…
Areas you get when you cut a circle with a chord
