What is a relationship that applies to right triangles? 1. From a piece of centimetre grid paper, cut out three squares with the following dimensions: 6 ст х 6 ст 8 cт х 8 ст 10 cm x 10 cm 2. Arrange the squares to form Triangle 1 as shown. Tape the squares onto a sheet of paper. Label Triangle 1. a Triangle 1 b The length of side a is 6 cm, side b is 8 cm, and side c is 10 cm.
What is a relationship that applies to right triangles? 1. From a piece of centimetre grid paper, cut out three squares with the following dimensions: 6 ст х 6 ст 8 cт х 8 ст 10 cm x 10 cm 2. Arrange the squares to form Triangle 1 as shown. Tape the squares onto a sheet of paper. Label Triangle 1. a Triangle 1 b The length of side a is 6 cm, side b is 8 cm, and side c is 10 cm.
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Materials
• centimetre grid
What is a relationship that applies to right triangles?
1. From a piece of centimetre grid paper, cut out three
the following dimensions:
раper
squares with
• scissors
10 cm х 10 cm
• transparent tape
• protractor
6 cm х 6 сm
8 cm x 8 cm
2. Arrange the squares to form
Triangle 1 as shown. Tape the
squares onto a sheet of paper.
Label Triangle 1.
Triangle
1
The length of side a is
6 cm, side b is 8 cm,
and side c is 10 cm.
88
NEL • Chapter 3
3. Copy the table below into your notebook.
Side
Literacy 8 Link
Angle
Opposite the
Side (°)
Right
Triangle?
(yes/no)
Area of
Length
(cm)
Square
(cm?)
Right Triangle
Side
A right triangle has a
right angle (90°). The
right angle may be
marked with a small
a
6.
37
Triangle 1
b
8
10
square.
a
5
The two shorter sides
that form the right
angle are called the
legs. The longest side
is called the
Triangle 2
b
7
10
a
25
hypotenuse.
Triangle 3
b
144
hypotenuse
169
leg
4. Measure the angle opposite each side of Triangle 1 with a protractor.
leg
angle opposite side c
hypotenuse
angle opposite side b
a
• the longest side of a
right triangle
side opposite the
right angle
Triangle
1
angle opposite side a
5. In
your
table, record the angle measures to the nearest degree.
6. Complete the rest of the table for Triangle 1.
7. Repeat the above steps for Triangles 2 and 3 in the table.
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