
How many zeros does a trillion have in its British definition?
Twelve
Britain hasn't used the long scale (eighteen zeros) since 1972.

What name is given to a regular polygon with eight sides?
Octagon

How many degrees in a semicircle?
180

What word is used to describe an angle between 0 and 90 degrees?
Acute

What name is given to a regular polygon with six sides?
Hexagon

How many millimetres in three centimetres?
30

What word is used to describe an angle between 90 and 180 degrees?
Obtuse

What is the square root of nine?
Three

How many degrees in a right angle?
90

In maths, name the different types of angles.
Acute (<90), right(90), obtuse(>90<180), straight(180), reflex(>180).
There is no name for an angle of 0°.