Regular Geometry - Midterm Review chapter 1A

Front

What is a number line?

Back

A number line is a straight line with numbers placed at equal intervals along its length, used to represent real numbers visually.

Front

How do you find the distance between two points on a number line?

Back

The distance between two points A and B on a number line is found by taking the absolute value of the difference between their coordinates: |A - B|.

Front

What are non-collinear points?

Back

Non-collinear points are points that do not all lie on the same straight line.

Front

What is an opposite ray?

Back

An opposite ray is a ray that starts at a point and extends infinitely in the opposite direction of another ray that starts at the same point.

Front

How do you measure an angle?

Back

An angle is measured in degrees, using a protractor, which shows the amount of rotation from one ray to another.

Front

What is the sum of angles in a triangle?

Back

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

Front

What is a ray in geometry?

Back

A ray is a part of a line that starts at a point and extends infinitely in one direction.

Front

Define collinear points.

Back

Collinear points are points that lie on the same straight line.

Front

What is the difference between acute, obtuse, and right angles?

Back

An acute angle is less than 90 degrees, a right angle is exactly 90 degrees, and an obtuse angle is greater than 90 degrees but less than 180 degrees.

Front

What is the formula for finding the measure of an exterior angle of a triangle?

Back

The measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles.