Fall Semester Geometry Review

Front

What are Vertical Angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal in measure.

Front

How do you find the endpoint of a segment given one endpoint and the midpoint?

Back

To find the endpoint, use the formula: Endpoint = 2 * Midpoint - Given Endpoint.

Front

What is the formula for finding the midpoint between two points (x1, y1) and (x2, y2)?

Back

Midpoint = ((x1 + x2)/2, (y1 + y2)/2).

Front

Reflect the point (x, y) over the y-axis. What is the new point?

Back

The new point is (-x, y).

Front

What is the measure of angles in a triangle?

Back

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

Front

What are Alternate Interior Angles?

Back

Alternate interior angles are pairs of angles that are on opposite sides of a transversal and inside the two lines. They are equal when the lines are parallel.

Front

What is the Reflexive Property?

Back

The Reflexive Property states that any quantity is equal to itself, e.g., a = a.

Front

What is an Angle Bisector?

Back

An angle bisector is a line or ray that divides an angle into two equal parts.

Front

How do you calculate the distance between two points (x1, y1) and (x2, y2)?

Back

Distance = √((x2 - x1)² + (y2 - y1)²).

Front

What is the definition of a segment in geometry?

Back

A segment is a part of a line that is bounded by two distinct endpoints.