Geometry Midyear review

Front

What is the slope of a line perpendicular to the line y = ½x + 4?

Back

-2

Front

How do you reflect the point C(2, 3) over the y-axis?

Back

C'(-2, 3)

Front

What is the relationship between vertical angles?

Back

Vertical angles are equal.

Front

If two lines have the same slope, what can we say about them?

Back

They are parallel.

Front

What do rigid motions preserve?

Back

Rigid motions preserve angle measure and side lengths.

Front

What is the formula for the slope of a line given two points (x1, y1) and (x2, y2)?

Back

Slope (m) = (y2 - y1) / (x2 - x1)

Front

What is the definition of parallel lines?

Back

Parallel lines are lines in a plane that never meet and have the same slope.

Front

What is the definition of perpendicular lines?

Back

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

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles on opposite sides of a transversal but inside the two lines.

Front

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

Back

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