Geometry Conjectures chapters 1-4

Front

In a coordinate plane, 2 nonvertical lines are perpendicular if and only if their slopes are _______ ________ of each other.

Back

opposite inverses

Front

If two angles are vertical, then they are _________.

Back

congruent

Front

The point of concurrency of the 3 altitudes of a triangle is called the ___________.

Back

orthocenter

Front

The point of concurrency of the medians of a triangle is called the _________.

Back

centroid

Front

The sum of the lengths of any 2 sides of a triangle is _______ than the length of the third side.

Back

greater

Front

What is the definition of a triangle?

Back

A polygon with three edges and three vertices.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.

Front

What are complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.