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 (x1, y1) and (x2, y2) is given by M = ((x1 + x2)/2, (y1 + y2)/2).

Front

If the midpoint of a segment is (7, 2) and one endpoint is (-4, 1), how do you find the other endpoint?

Back

Use the midpoint formula: Set (7, 2) = ((-4 + x)/2, (1 + y)/2) and solve for x and y.

Front

How many degrees are in a right angle?

Back

90 degrees.

Front

What is the definition of perpendicular lines?

Back

Lines that intersect at a right angle (90 degrees).

Front

What is the formula to find the y-coordinate of the midpoint of a line segment?

Back

The y-coordinate of the midpoint is (y1 + y2)/2.

Front

If one angle measures 60 degrees, what is the measure of its complementary angle?

Back

30 degrees (since complementary angles sum to 90 degrees).

Front

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

Back

180 degrees.

Front

What is the definition of a right angle?

Back

An angle that measures exactly 90 degrees.

Front

If two angles are supplementary and one measures 33 degrees, what is the measure of the other angle?

Back

147 degrees (since supplementary angles sum to 180 degrees).

Front

What is the definition of parallel lines?

Back

Lines in a plane that never meet and are always the same distance apart.