Geometry Review

Front

What is the midpoint formula for finding the midpoint of a line segment?

Back

The midpoint M of a line segment with endpoints A(x1, y1) and B(x2, y2) is given by M = ((x1 + x2)/2, (y1 + y2)/2).

Front

What are perpendicular lines?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees).

Front

Define an obtuse angle.

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

What is the definition of alternate interior angles?

Back

Alternate interior angles are pairs of angles that are on opposite sides of a transversal and inside the two lines it intersects.

Front

How do you find the coordinates of an endpoint given the midpoint and one endpoint?

Back

Use the formula: (x2, y2) = (2 * midpoint_x - x1, 2 * midpoint_y - y1).

Front

What is the definition of 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

What are corresponding angles?

Back

Corresponding angles are pairs of angles that are in the same position at each intersection where a straight line crosses two others.

Front

What is the sum of the interior angles of a triangle?

Back

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

Front

Define a straight angle.

Back

A straight angle is an angle that measures exactly 180 degrees.

Front

What is the difference between acute and obtuse angles?

Back

An acute angle measures less than 90 degrees, while an obtuse angle measures more than 90 degrees.