Circle

Question 1

What does a tangent do?

Answer 1

A tangent touches the edge of the circle at one point

Question 2

What is the rule for one angle in a triangle in a semicircle?

Answer 2

The angle in a semicircle is always 90*

Question 3

What is the rule for angles in a cyclic quadrilateral?

Answer 3

Opposite sides in a cyclic quadrilateral add up to 180*

Question 4

What do you look for to identify a cyclic quadrilateral?

Answer 4

All points of the quadrilateral must be touching the circumference

Question 5

Circle theorem loc

Answer 5

23

Question 6

Angles in the same segment are

Answer 6

equal

Question 7

top centre

Answer 7

centre twice as big

Question 8

bisect loc

Answer 8

swan

Question 9

Segment loc

Answer 9

28

Question 10

semicircle loc

Answer 10

28 my window

Question 11

chord rule

Answer 11

perpendicular from centre splits the chord so creates 90

Question 12

tangent chord

Answer 12

equal angle in alternate segment

Question 13

work out circumference

Answer 13

pi x diameter

Question 14

Chord

Answer 14

inside but not the middle

Question 15

Tangent Angle forms?

Answer 15

right angle with the circle’s radius.

Question 16

An angle inscribed across a circle’s diameter is always

Answer 16

Right angle

Question 17

an angle made from points sitting on the circle’s circumference.

Answer 17

Inscribed Angle

Question 18

“Cyclic” Quadrilateral opp angles

Answer 18

180

Question 19

radius 4

Answer 19

50.24

Question 20

Radius 5

Answer 20

78.5

Question 21

Radius 3

Answer 21

28.26

Question 22

Formula circumference

Answer 22

Pi x diameter

Question 23

Pi x 16

Answer 23

50.24

Question 24

radius 7

Answer 24

153.86

Question 25

Radius 8

Answer 25

200.96

Question 26

Radius 9

Answer 26

254.34

Question 27

Radius 6

Answer 27

113.04

Question 28

radius 2

Answer 28

12.56