geometry semester exam

Front

In a 45-45-90 triangle, if one leg is given, how do you find the other leg?

Back

Use the same length for the second leg.

Front

What do you call points that lie on the same line?

Back

Collinear Points.

Front

What type of angle is formed when the measure is exactly 180 degrees?

Back

Straight angle.

Front

In a 30-60-90 triangle, which side is the longest?

Back

The hypotenuse.

Front

What is the relationship between the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.

Front

What do you call a triangle with all sides of different lengths?

Back

Scalene triangle.

Front

What is the Pythagorean theorem?

Back

a² + b² = c², where c is the hypotenuse.

Front

What is a right angle?

Back

An angle that measures exactly 90 degrees.

Front

What is the definition of parallel lines?

Back

Lines that never intersect and are always the same distance apart.