Parallel and perpendicular lines

Mathematics · Geometry · ages 7-8

Name ______________________ Date ____________

Which word describes a line that stands up tall, like a flagpole?
- Horizontal
- Vertical
- Curved
A window frame has 2 horizontal bars and 2 vertical bars. How many bars is that altogether?
Answer: ______________
What do perpendicular lines make where they meet?
- An acute angle
- A right angle
- An obtuse angle
- A straight line
Which word describes a line that lies flat, like the edge of a table?
- Horizontal
- Vertical
- Diagonal
A ladder has 6 rungs. One rung is broken and taken away. The rest are horizontal. How many horizontal rungs are left?
Answer: ______________
The top and bottom edges of a door are parallel to each other.
Circle one: True False
Look at the capital letter T. What kind of lines are the top bar and the stem?
- Parallel lines
- Curved lines
- Lines that never touch
- Perpendicular lines
Look at the square picture frame. At each corner, two edges meet. What are those edges called?
- Parallel lines
- Perpendicular lines
- Curved lines
Sam looks at a tic-tac-toe grid. Some lines cross and make right angles. Other lines never cross at all. What are the lines that never cross called?
- Parallel lines
- Perpendicular lines
- Right-angle lines
A fence is built from pairs of parallel rails. There are 3 pairs. How many rails is that?
Answer: ______________

Answer key

For grown-ups. Fold this page away before handing over the rest.

Vertical · A vertical line stands straight up and down, like a flagpole.
4 · 2 horizontal bars plus 2 vertical bars makes 4 bars.
A right angle · Perpendicular lines meet at a square corner, which is a right angle.
Horizontal · A horizontal line lies flat, side to side, like the top of a table.
5 · 6 rungs minus the 1 broken rung leaves 5 horizontal rungs.
True · The top and bottom edges never meet and stay the same distance apart, so they are parallel.
Perpendicular lines · The top bar and the stem of T meet at a square corner, so they are perpendicular.
Perpendicular lines · The edges meet at a right angle in each corner, so they are perpendicular.
Parallel lines · Lines that never cross and stay the same distance apart are parallel, not perpendicular.
6 · Each pair has 2 rails, and 3 pairs give 3 x 2 = 6 rails.