Cyclic Quadrilateral theorems Flashcards
1
Q
What is a cyclic quadrilateral?
A
A cyclic quadrilateral is a quadrilateral whose vertices are on the circumference of the circle.
2
Q
What do the opposite interior angles of a cyclic quadrilateral add up to?
A
The opposite interior angles of a cyclic quadrilateral are supplementary {they add up to 180º}.
3
Q
What is the relationship between the opposite exterior angle of a cyclic quadrilateral, and its opposite interior angle?
A
The opposite exterior angle of a cyclic quadrilateral is equal to the opposite interior angle.
4
Q
What is a tangent?
A
A tangent is a line that touches the circumference of the circle.
5
Q
Where do a tangent and a radius meet?
A
A tangent and a radius meet at right angles.
