Lines and Angles Vocab

What are parallel lines?

• Lines that intersect to form a 90 degree angle
• Lines in a same plane that do not intersect
• A line that intersects 2 or more lines
• Lines that intersect at one point

Tags

CCSS.HSG.CO.A.1

CCSS.HSG.GPE.B.5

What are corresponding angles?

• Angles whose sum measures 180 degrees
• Angles whose sum measures 90 degrees
• Two angles in the same position when parallel lines are cut by a transversal
• The angles opposite of each other when two lines cross.

Tags

CCSS.HSG.CO.C.9

What are interior angles?

• The angles inside of a shape
• The angles inside the triangle that are not adjacent to the exterior angle.
• Two angles whose sum measures 180 degrees.
• Two angles in the same position when parallel lines are cut by a transversal

Tags

CCSS.HSG.CO.C.10

What are perpendicular lines?

• Two lines that cross at exactly one point
• Lines in the same plane that never intersect
• A line that intersects two or more lines
• Lines that intersect to form a 90 degree angle

Tags

CCSS.HSG.CO.A.1

What are intersecting lines?

• A line that intersects two or more lines
• Lines in the same plane that never intersect
• Two lines that cross at exactly one point
• Lines that intersect to form a 90 degree angle

Tags

CCSS.4.G.A.1

What is a transversal?

• A line that intersects two or more lines
• The angles opposite of each other when two lines cross
• Two angles whose sum measures 180 degrees
• Lines that intersect to form a 90 degree angle

Tags

CCSS.HSG.CO.C.9

What are alternate interior angles?

• A pair of angles on the outer side of two lines cut by a transversal, but on opposite sides of the transversal

• The angles opposite of each other when two lines cross

• A pair of angles on the inner side of two lines cut by a transversal, but on opposite sides of the transversal

• Two angles in the same position when parallel lines are cut by a transversal

Tags

CCSS.8.G.A.5

What are alternate exterior angles?

• A pair of angles on the outer side of two lines cut by a transversal, but on opposite sides of the transversal

• The angles opposite of each other when two lines cross

• A pair of angles on the inner side of two lines cut by a transversal, but on opposite sides of the transversal

• Two angles in the same position when parallel lines are cut by a transversal

Tags

CCSS.HSG.CO.A.1

CCSS.HSG.CO.C.9

What are vertical angles?

• The angles inside the triangle that are not adjacent to the exterior angle
• The angles opposite of each other when two lines cross
• The angles inside of a shape
• Two angles whose sum measures  90 degrees

Tags

CCSS.HSG.CO.C.9

What are supplementary angles?

• Two angles whose sum measures 180 degrees
• 
  Two angles whose sum measures  90 degrees
• 
  Two angles in the same position when parallel lines are cut by a transversal
• The angles inside the triangle that are not adjacent to the exterior angle

Tags

CCSS.4.MD.C.5

CCSS.4.MD.C.7