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Geometry Trivia

Geometry Quiz

Don’t be a square, it’s time to shape up and test your Geometry knowledge.

Listen As You Play


The Dorky Round

One

The interior angles of any triangle add up to what?
Click to Flip
180 Degrees

Two

Two lines that never intersect are called what?
Click to Flip
Parallel

Three

In a right triangle, what do you call the longest side?
Click to Flip
The hypotenuse

Four

What’s the geometric term for a 2-dimensional flat surface?
Click to Flip
A plane

Five

22/7 is a rough approximation for what geometric number?
Click to Flip
Pi (or 3.14)

Six

How many straight lines can be drawn through two points?
Click to Flip
One

Seven

A quadrilateral with one set of parallel lines is called what?
Click to Flip
A Trapezoid.

Eight

If we had two sets of parallel lines on a quadrilateral, we have what?
Click to Flip
A parallelogram

Nine

Now, let’s make that parallelogram have all four sides the same length. What do we have now?
Click to Flip
A rhombus

Ten

Let’s now take that rhombus and make all four corners have right angles, what shape do we have?
Click to Flip
A square

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The Geeky Round

One

What is the minimum number of sides to make a geometric solid?
Click to Flip
Four sides. That makes a tetrahedron (or a D4 for RPG players)

Two

The Cartesian Coordinate System is named after who?
Click to Flip
Rene Descartes

Three

If you’re using the formula A²+B²=C², what are you trying to figure out?
Click to Flip
The sides of a Right Triangle

Four

What would you call a 2-dimensional object with seven sides?
Click to Flip
A heptagon. Septa is the Latin prefix for Seven whereas hepta is Greek

Five

How many times can a line segment be bisected?
Click to Flip
One

Six

The sum of complementary angles is what?
Click to Flip
90 Degrees

Seven

How many sides would a nonagon have?
Click to Flip
Nine

Eight

What do you call a two-dimensional object with only one side?
Click to Flip
A mobius strip

Nine

What do you call a triangle with all three sides having different lengths?
Click to Flip
A scalene triangle

Ten

A straight line connecting two points on a circle is a what?
Click to Flip
A chord

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The Nerdy Round

One

What’s the formula for calculating the volume of a cylinder?
Click to Flip
Pi x R² x H or Pi times the radius of one end squared times the height.

Two

Euclid of Alexandria was born in what century?
Click to Flip
The 4th Century BCE

Three

What is the distance called between two points of a sphere along its surface?
Click to Flip
The Great-circle distance

Four

The interior angles of any hexagon add up to what?
Click to Flip
720 degrees

Five

A polygon with 20 sides would be called what?
Click to Flip
An icosagon

Six

The five-pointed star, like you would see on a US flag, is called what in geometry?
Click to Flip
A regular concave decagon

Seven

A slice of a circle that comes from the center point (like a piece of pizza) is called what?
Click to Flip
A sector

Eight

In three dimensional geometry, if you have two lines that do not intersect and are not parallel, what are they?
Click to Flip
Skew Lines

Nine

What Greek mathematician wrote the works, On the Sphere and the Cylinder and On Spirals?
Click to Flip
Archimedes

Ten

What is the type of geometry that is based on a curved plane, not a flat plane?
Click to Flip
Non-euclidean Geometry

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