Angle Relationships

Straight Angle

• 
• 180 degrees

• 360 degrees

• 45 degrees

What are Alternate Exterior Angles?

• 
• Angles that are on the same side of a transversal and inside the two lines it intersects.

• Angles that are equal to each other when two parallel lines are cut by a transversal.

• Angles that are supplementary when two parallel lines are cut by a transversal.

Exterior Angle

• 
• Angle formed inside a polygon

• Angle formed by two intersecting lines

• Angle that is always 90 degrees

Linear Pair

• 
• A pair of angles that are complementary.

• A pair of angles that are vertical.

• A pair of angles that are equal.

What is the Exterior Angle Theorem?

• 
• The exterior angle of a triangle is always greater than the interior angles.

• The exterior angle of a triangle is equal to the adjacent interior angle.

• The exterior angle of a triangle is equal to the difference of the two opposite interior angles.

Same Side Exterior Angles

• 
• Angles that are supplementary

• Angles that are congruent

• Angles that are on the same side of a transversal and outside the parallel lines

What are Vertical Angles?

• 
• Angles that are adjacent to each other.

• Angles that add up to 90 degrees.

• Angles that are formed by parallel lines.

Right Angle

• 
• 45 degrees

• 180 degrees

• 360 degrees

What is the Angle Sum Theorem?

• 
• The sum of the angles in a triangle is 90 degrees.

• The sum of the angles in a quadrilateral is 360 degrees.

• The sum of the angles in a triangle is 360 degrees.

What are Supplementary Angles?

• 
• Two angles that add up to 180 degrees

• Two angles that are equal in measure

• Two angles that are adjacent to each other