This document provides definitions and examples of parallel and perpendicular lines. It begins by defining parallel lines as two lines on a surface that never meet and are always the same distance apart. Perpendicular lines are defined as lines that cross another at exactly 90 degrees, forming a right angle. An example image shows parallel lines in yellow that never meet and are the same distance apart, while perpendicular red lines form a right angle. Students are then asked to complete a worksheet identifying parallel and perpendicular lines in images and find examples around them.

1. Mr. opati
03/02/2023

2. 
Choose any 9 of the following numbers...
4 90° 3 5
8 360° 180° 6
12 0 1 7
-Whiteboards
-Cross them out when the answer is your number

3.  Pick any 9 numbers from these:
1. How many sides does a square have? 4
2. How many sides does a heptagon have? 7
3. Angles on a straight line add up to 180
4. A full circle is a revolution angle, which means there are how many
degrees in a full circle? 360
5. How many sides does an octagon have? 8
6. How many sides does a triangle have? 3
7. How many sides does a pentagon have? 5
8. A square and a rectangle have 4 angles which add up to 360degrees.
What is the size of one of the angles in a square and rectangle? 90
9. How many edges does a cube have? 12
10. How many edges does a sphere have? 0
11. How many faces does a sphere have? 1
12. How many faces does a cube have? 6
Bingo!

4. 
Recap…
 Define a square
 4 equal sides
 All angles 90°
 Total angles 360°
 Define a rectangle
 4 sides, opposite sides equal
 All angles 90°
 Total angles 360°

5. 
 Investigate whether :
 A square is a rectangle
 A rectangle is a square
• Discuss with the person next to you and come up with
a convincing argument to present to the class.
• Consider definitions of both the shapes and properties
when coming to conclusions.
In pairs..

6. • All girls are people, but not all people are girls.
• All cars are machines, but not all machines are cars.
• All lollipops are candies, but not all candies are lollipops.
Puppies, lollipops, girls and cars are all examples of specific types of a more
general category, like dogs, candy, people and machines. All the specific
examples, puppies, lollipops, girls and cars, have more characteristics that
make them more specific.
A rectangle is a square when both pairs of opposite sides are the same
length. This means that a square is a specialized case of the rectangle and is
indeed a rectangle.

7. 
 Learning objective:
 TBAT define and identify parallel and perpendicular
lines.
Parallel and Perpendicular lines
Key words: Parallel, Perpendicular, Right angle, Equal Distance
03/02/2023

8. 
 Two lines on a surface that never meet.
 They are always the same distance apart.
What are parallel lines?
Key words: Parallel, Perpendicular, Right angle, Equal Distance

9. What are Parallel Lines?
They are two lines on a surface that never meet. They are
always the same distance apart.

10. 
What are perpendicular lines?
 This is when a line crosses another line at exactly 90°
Key words: Parallel, Perpendicular, Right angle, Equal Distance

11. What are Perpendicular Lines?
This is when a line crosses another at exactly 90 degrees.
A tip: always make sure it forms a upside T or capital L
exactly. Draw over the shape and check.
90 degrees!

12. 
Perpendicular
lines
Yellow lines
are parallel
because they
never meet
and are
always the
same distance
apart.
Red lines are
perpendicular to each
other because they
form a right angle
(90degrees).
NOTE: Any two lines
that meet are not
perpendicular. They
need to form a right
angle.

13. 
 Complete the worksheet
Task 1
Key words: Parallel, Perpendicular, Right angle, Equal Distance

14. 
 Find the parallel and perpendicular lines in the
following pictures.
Task 2

16. 

17. 

18. 

19. 
Switzerland’s flag

20. 
 Can you find parallel and perpendicular lines
around you?
 Come up with at least two and write them down in
your book.
Can you…?