circle theorems

Question 1

Describe circle theorem 1 by looking at the drawing

Answer 1

Angles at the circumference of a semi circle is a right angle

Question 2

Describe circle theorem 2 by looking at the drawing

Answer 2

Angles at the centre is twice the size of the angle at the circumference

Question 3

Describe circle theorem 3 by looking at the drawing

Answer 3

Opposite angles in a cyclic quadrilateral sum to 180

Question 4

Describe circle theorem 4 by looking at the drawing

Answer 4

The radius is perpendicular to any tangent on a circle

Question 5

Describe circle theorem 5 by looking at the drawing

Answer 5

Tangents from an external point are equal in length

Question 6

Describe circle theorem 6 by looking at the drawing

Answer 6

Angles in the same segments are equal

Question 7

Describe circle theorem 7 by looking at the drawing

Answer 7

Angles in alternate segments are equal