Circles 2-[read the textbook before this pg 171-187] Flashcards
1
Q
What is subtend ?
A
The angles formed when two lines meet at a point
2
Q
Theorem 1
A
Equal chords of a circle subtend equal angles at the centre.
3
Q
Theorem 2
A
If the angles subtended by the chords of a circle at the centre are equal then the chords are equal.
4
Q
Theorem 3
A
The perpendicular from the centre of a circle to a chord bisects the chord.
5
Q
Theorem 4
A
The line drawn through the centre of a circle to bisect a chord is perpendicular to the chord.
6
Q
Theorem 6 [5 cancelled]
A
Equal chords of a circle are equidistant
from the centre.
7
Q
Theorem 8
A
The angle subtended by an arc at the centre is double the angle subtended by it at any point on the remaining part of the circle.
8
Q
Theorem 9
A
Angles in the same segment of a circle are equal.
