Topic 1: Foundations of Geometry II

Front

What are parallel lines?

Back

Coplanar lines that go in the same direction, never touch, and have the same slope.

Front

What is the supplementary angle measure of an angle that is measured at 60 degrees?

Back

120 degrees.

Front

How do you find the slope of a line that passes through two points?

Back

Use the formula: slope (m) = (y2 - y1) / (x2 - x1).

Front

What is the measure of a right angle?

Back

Exactly 90 degrees.

Front

What does it mean if M is the midpoint of AB?

Back

AM = MB, which is defined by the definition of midpoint.

Front

What are skew lines?

Back

Lines that are not coplanar and do not intersect.

Front

What is the definition of perpendicular lines?

Back

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

Front

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

Back

180 degrees.

Front

What is the definition of a transversal line?

Back

A line that intersects two or more lines at different points.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.