8 Lesson 30: Solving for Missing Transversal Angles

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 parallel lines?

Back

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

Tags

CCSS.HSG.CO.A.1

Front

What is the relationship between corresponding angles when a transversal crosses parallel lines?

Back

Corresponding angles are equal when a transversal crosses parallel lines.

Tags

CCSS.8.G.A.5

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Tags

CCSS.7.G.B.5

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Tags

CCSS.7.G.B.5

Front

How do you find the value of x in angle equations?

Back

To find the value of x, set up an equation based on the relationships between the angles and solve for x.

Tags

CCSS.8.G.A.5

Front

If two angles are alternate interior angles, what can be said about their measures?

Back

Alternate interior angles are equal when a transversal crosses parallel lines.

Tags

CCSS.8.G.A.5

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.

Tags

CCSS.8.G.A.5

Front

How do you determine if two lines are parallel using angle measures?

Back

If the corresponding angles are equal or the alternate interior angles are equal, the lines are parallel.

Tags

CCSS.8.G.A.5

Front

What is the formula for finding the measure of an angle if it is expressed in terms of x?

Back

Substitute the value of x into the angle expression to find the measure of the angle.

Tags

CCSS.HSG.SRT.C.8