Circle Geometry Vocabulary

Question 1

Major Arc

Answer 1

The longer arc between to points on a circle

Question 2

Minor arc

Answer 2

The shorter arc between 2 points (same points as major arc) on a circle

Question 3

Central angle

Answer 3

The angle formed by joining the end points on an arc to the centre of the circle. Vertex is at the centre of the circle

Question 4

Inscribed angle

Answer 4

The angle formed by joining the endpoints on an arc to a poing on the circle. Vertex is on the circle. In a circle, all inscribed angle that are subtended by the same arc are congruent.

Question 5

Subtended angle

Answer 5

An angle made by a line, arc, or object

Question 6

Perpendicular bisector

Answer 6

À line that cuts a chord in half, it must pass through the centre of the circle

Question 7

Diameter

Answer 7

2 radius

Question 8

Radius

Answer 8

Half of diameter

Question 9

Arc

Answer 9

Section of a circle on the circonférence

Question 10

Inscribed polygon

Answer 10

A polygon whose vertices lie on a circle

Question 11

Secant

Answer 11

Line that passes through 2 points of the circle but does not stop on the circonférence

Question 12

Point of tangency

Answer 12

Circle and tangent share this point

Question 13

Tangent

Answer 13

Line that touches the circle ate only one point

Question 14

Pythagorean Theorem

Answer 14

a2+b2=hypothalamus2

Question 15

Straight angle

Answer 15

Angle with degree of 180