Exploring Parallel and Perpendicular Lines

What defines parallel lines?

• Lines that form a right angle

• Lines that never meet, regardless of length

• Lines that intersect at one point

• Lines that are sometimes equidistant

What happens when a transversal crosses parallel lines?

• Adjacent angles sum up to 90 degrees

• It forms a circle

• Opposite angles are not equal

• Adjacent angles sum up to 180 degrees

What is the angle measure formed by perpendicular lines?

• 45 degrees

• 180 degrees

• 90 degrees

• 360 degrees

Which symbol represents parallel lines?

• A right angle symbol

• A pair of crossed lines

• A pair of parallel dashes

• A single vertical line

What type of angle is formed by intersecting lines that are not perpendicular?

• None of the above

• Acute

• Obtuse

• Right

How are opposite sides of a square related?

• Intersecting

• Parallel

• Perpendicular

• None of the above

What total angle is formed by the angles around a point where two lines intersect?

• 270 degrees

• 180 degrees

• 90 degrees

• 360 degrees

If line A is parallel to line B, which symbol is used?

• --

• XX

• ||

• ++

What is not a characteristic of parallel lines?

• Extend infinitely without meeting

• Intersect at 90 degrees

• Never intersecting

• Equidistant always

Which statement is true about the angles when a transversal crosses parallel lines?

• Adjacent angles are always 90 degrees

• All angles sum to 180 degrees

• Opposite angles are equal

• All angles are acute