First part of the journey Compared to the second? cles every Monday and Thursday.
rs and 20 minutes.
Exercise 5.1 Кевицариулт
Ashow that the interior angle of a regular octagon is 135º.
2 Calculate the interior angle of a regular polygon with:
b 15 sides.
3 a Copy and complete this table to list the angles of regular polygons.
Number of sides
Exterior angle Interior angle
5
72°
a 12 sides
ch day.
of the same pens costs $19.70.
10
20
40
2.69.
Ililitre.
50g box of the same breakfast cereal costs $2.86.
1 tube of the same toothpaste costs $2.30.
b Look again at the table you completed in part a.
If you double the number of sides of a regular polygon, what happens to the exterior angle?
4 a The exterior angle of a regular polygon is 20°.
How many sides does the polygon have?
b The exterior angle of a regular polygon is 18º.
How many sides does this polygon have?
5 Work out the number of sides of a regular polygon, if the interior angle is:
a 170°
b 172°
( 177°.
Can a regular polygon have an interior angle of:
Give reasons for your answers.
a 156°
b 132°?
The diagram shows two sides of a regular polygon.
220°
te one puzzle with 34 clues.
zzle with 80 clues.
It took Anna to complete one clue.
sword puzzle Anna found easier.
Rafael's journey
Distance (km)
20
18
16
14
12
10
8
How many sides does the polygon have?
8 The diagram shows a regular octagon and an equilateral triangle joined together,
4
2
0
0
A
1
2
Time (hours)
3
B
ling faster?
ney.
p.).
r's house.
AB and BC are two sides of a regular polygon.
How many sides does this polygon have?
21
5 Shapes
Please I need it fast!!!
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