Lines
Angles
Pythagoras
Theorems
Proofs
100

Lines with the same slope

What are parallel lines?

100

Angles with a sum of 180 degrees

What are supplementary angles?

100

I have a theorem relating the legs of a triangle to the hypotenuse.

Who is Pythagoras?

100

My name makes you think I'm straight up and down.

What is the vertical angles theorem?

100

I come first in a proof.

What is the given statement?

200

This line cuts across parallel lines.

What is a transversal?

200

These angles are exactly the same.

What are congruent angles?

200

My theorem applies to these triangles.

What are right triangles?

200

The corresponding angles postulate says that pairs of corresponding angles are ______.

What is equal?

200

A = A is and example of this property.

What is the reflexive property?

300

This measures how steep or flat a line is.

What is the slope?

300

If you add these, you always get 90.

What are complementary angles?

300

This right triangle side is always the longest and always across from the right angle.

What is the hypotenuse?

300

This theorem is for angles that are between parallel lines and equal to each other.

What are alternate interior angles?

300

You can add equals to equals in a proof.

What is the addition property of equality?

400

These lines don't cross because they can't get on the same plane.

What are skew lines?

400

These angles lie between parallel lines and on opposite sides of a transversal.

What are alternate interior angles?

400

If my legs are 3 and 4, the other side is always this.

What is 5?

400

Proving lines are parallel is best done with a _____ theorem.

What is a converse?

400

This property lets you put something in place of its equal.

What is substitution?

500

These lines cross forming equal angles.

What are perpendicular lines?

500

If you add these angles together, you can straighten things out.

What is a linear pair?

500

All the sides are _______ in my theorem.

What is squared?

500

These angles formed by cutting parallel lines with a transversal sum to 180, but they aren't a linear pair.

What are consecutive interior angles?

500

This property makes equality go from one equal to another to another etc. etc.

What is the transitive property?