Geometry

Question 1

Angles on opposite sides of an X shape

Answer 1

Vertically opposite

Question 2

Angles that are equal on Z shape

Answer 2

Alternate angles

Question 3

Equal angles on F shape

Answer 3

Corresponding angles

Question 4

Interior angles between two parallel lines add up to

Answer 4

180°

Question 5

Each exterior angle of a triangle is equal to …

Answer 5

The sum of the interior opposite angles

Question 6

Triangle inequality theorem:

Answer 6

Two sides of a triangle are together greater than the third

Question 7

What is a polygon

Answer 7

A closed shape with at least 3 sides

Question 8

In a parallelogram opposite sides are

Answer 8

Equal and parallel

Question 9

In a parallelogram opposite angles are

Answer 9

Equal

Question 10

In a rhombus, diagonals bisect eachither…

Answer 10

At a 90°angle

Question 11

Chord

Answer 11

Any segment that joins two points on a circle

Question 12

Arc

Answer 12

Any part of the circumference

Question 13

Opposite angles in a cyclic quadrilateral add up to

Answer 13

180°

Question 14

A tangent to a circle is at an X° angle to the radius at the point of contact

Answer 14

90°

Question 15

Proposition

Answer 15

A mathematical statement or theorem that may be true or false

Question 16

A proof

Answer 16

A series of logical steps that we use to prove a statement

Question 17

A theorem

Answer 17

A statement that has been proved using a series of logical steps

Question 18

Axiom

Answer 18

A statement we accept without any proof

Question 19

Corollary

Answer 19

A statement that follows readily from a previous theorem

Question 20

A converse

Answer 20

A theorem formed by swapping the order of the hypothesis and the conclusion

Question 21

Congruent triangles

Answer 21

Triangles where all corresponding sides and interior angles are equal in measure

Question 22

4 types of congruent triangles

Answer 22

SSS
SAS
ASA
RHS

Question 23

Circumcentre is the

Answer 23

Intersection of the perpendicular bisectores

Question 24

Intercentre is the

Answer 24

Intersection of the angle bisectores

Question 25

Circumcircle is

Answer 25

Circle on which all vertexes of triangle are on the line of the circle

Question 26

Incircle

Answer 26

Circle inside the triangle. The centre is equidistant from all sides of the triangle

Question 27

The centroid is

Answer 27

Where the medians intersect

Question 28

What is a median of a triangle

Answer 28

Midpoint of line attached to vertex on opposite side

Question 29

Orthocentre is

Answer 29

Where the altitudes intersect

Question 30

What are the altitudes

Answer 30

The vertex to the opposite side perpendicularly

Question 31

What is the centre of gravity also called

Answer 31

Centroid