Circle Theoroms Flashcards
(8 cards)
What is the circle theorem rule involving semi circles?
The angle on the circumference in a semi circle is 90 degrees
What is the most basic circle theorem rule?
The angle at the center is twice the size of the angle at the circumference
State the circle thereom rule that involves two identical angles
Angles in the same segment subtended from the same arc are equal
What is the circle theorem involving when there’s a quadrilateral that all 4 points touch the circumference
Opposite angles In a cyclic quadrilateral add up to 180 degrees
If two tangents are drawn from a point to a circle will they be equal?
Yes if two tangents are drawn from a point to a circle they will be equal
What is the angle of an angle drawn from the radius of a circle to a tangent
90 degrees because the angle between a tangent and radius of a circle is 90 degrees
What is the alternate angle theorem?
The alternate angles is that the angle between the Tangent on the side of the triangle is equal to the interior opposite angle
What is the perpendicular circle theorem?
A line drawn from the centre of a circle to the midpoint of a chord is perpendicular at 90° to the chord