Test:
Triangles - Challenging
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Question 1:
Find
α
A
α
=
90
∘
B
α
=
80
∘
C
α
=
60
∘
D
α
=
75
∘
Question 2:
Find the height of a triangle where
a
=
6
c
m
A
3
B
3
2
C
6
D
3
3
Question 3:
Find the area:
A
25
c
m
2
B
22.5
c
m
2
C
20
c
m
2
D
17.5
c
m
2
Question 4:
Which set of numbers is the side lengths of a triangle?
A
2
,
2
2
,
3
2
B
3
,
5
,
5
C
2
,
5
,
5
D
2
3
,
3
2
,
7
Question 5:
Which set of numbers forms a right-angled triangle?
A
3
5
,
2
5
,
5
B
2
7
,
2
6
,
5
C
2
10
,
3
3
,
3
D
3
2
,
2
3
,
2
2
Question 6:
Which set of numbers forms a right-angled triangle?
A
7
,
5
,
3
2
B
2
15
,
6
,
2
7
C
4
2
,
3
3
,
2
14
D
8
,
2
10
,
2
6
Question 7:
What is a side length of an equilateral triangle with the height equal to
3
c
m
A
6
c
m
B
2
c
m
C
2
3
c
m
D
3
c
m
Question 8:
Find the perimeter of a square where the diagonal is equal to
5
6
c
m
A
20
3
c
m
B
44
c
m
C
40
3
c
m
D
75
c
m
Question 9:
Find the area of a trapezium:
A
40
c
m
2
B
44
c
m
2
C
55
c
m
2
D
50
c
m
2
Question 10:
Find the area of an inscribed triangle, where the radius of a circle is equal to
8
c
m
A
60
3
c
m
2
B
81
c
m
2
C
64
c
m
2
D
36
c
m
2
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