Angles & Lines

What type of line is this?

• Parallel lines

• Intersecting lines

• Perpendicular lines

• Oblique lines

Answer explanation

The correct answer is 'Intersecting lines' because these lines cross each other at a point, unlike parallel lines which never meet, perpendicular lines which meet at right angles, and oblique lines which are neither parallel nor perpendicular.

What is the type of line matches this definition?

Two or more lines which have no intersections but are not parallel, also called agonic lines. Since two lines in the plane must intersect or be parallel, it can exist only in three or more dimensions

• Perpendicular line

• Oblique line

• Parallel line

• Skew line

Answer explanation

Skew lines are defined as lines that do not intersect and are not parallel, existing only in three or more dimensions. This matches the definition provided, making 'skew line' the correct answer.

• A

• B

• C

• D

What type of line is this?

• Parallel lines

• Intersecting lines

• Perpendicular lines

• Oblique lines

Answer explanation

The correct answer is 'Intersecting lines' because these lines cross each other at a point, unlike parallel lines which never meet, perpendicular lines which meet at right angles, and oblique lines which are slanted but do not intersect.

What are these dots called?

• Lines

• Line segments

• Rays

• Points

Answer explanation

The dots referred to in the question are called points. Points are defined as exact locations in space with no size or dimension, distinguishing them from lines, line segments, and rays, which have length or direction.

What is this called?

• Line

• Line segment

• Parallel line

• Ray

Answer explanation

The correct answer is 'Line segment' because it refers to a part of a line that has two endpoints. Unlike a 'Line' which extends infinitely, a 'Line segment' has a defined length.

P--p--dicu__ lines that intersect at a right (90 degrees) angle.

Answer explanation

The correct term for lines that intersect at a right angle (90 degrees) is 'Perpendicular'. This term specifically describes the relationship between such lines.

Para__e_ lines never meet

Answer explanation

Parallel lines are defined as lines in a plane that never meet, regardless of how far they are extended. Therefore, the correct answer to fill in the blank is 'parallel lines'.

What type of angle is this?

• acute

• obtuse

• right

Answer explanation

A right angle measures exactly 90 degrees. It is one of the three main types of angles, alongside acute (less than 90 degrees) and obtuse (greater than 90 degrees). Therefore, the correct answer is 'right'.

What type of angle is this? 

• acute

• obtuse

• right

Answer explanation

An obtuse angle is defined as one that measures more than 90 degrees but less than 180 degrees. Since the correct answer is obtuse, it indicates that the angle in question exceeds 90 degrees.