Parallel Lines Unit 3 Test Review

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle in which all three sides are of equal length and all three angles are equal, each measuring 60 degrees.

Front

How do you solve for a variable in an equation?

Back

To solve for a variable, isolate the variable on one side of the equation using inverse operations (addition, subtraction, multiplication, division) to simplify the equation.

Front

What is an acute triangle?

Back

An acute triangle is a triangle in which all three interior angles are less than 90 degrees.

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

What is a transversal in geometry?

Back

A transversal is a line that intersects two or more other lines at distinct points.

Front

What are corresponding angles?

Back

Corresponding angles are pairs of angles that are in the same position on two different parallel lines cut by a transversal.

Front

What is the relationship between alternate interior angles when two lines are parallel?

Back

When two parallel lines are cut by a transversal, the alternate interior angles are congruent.

Front

What is the relationship between same-side interior angles when two lines are parallel?

Back

When two parallel lines are cut by a transversal, the same-side interior angles are supplementary, meaning they add up to 180 degrees.

Front

What is the definition of parallel lines?

Back

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

Front

How can you prove that two lines are parallel using angle relationships?

Back

You can prove that two lines are parallel by showing that corresponding angles are equal, alternate interior angles are equal, or same-side interior angles are supplementary.