______
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How Many Triangles?
iFI
—
II
Date:
HOUt
—
I State the number of possible triangles.
.
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1ABC, ZA=90°,c=12,a=1O
c)
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I
5cm
7cm
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5cm
5cm
7cm
7cm
2.
1 ow many triangles can be formed by placing vertex C along the horizontal line through A, if:
B
h
c=1
h
A
a)
a=20
I
0
b) a=6
c) a=13
3
3. F’ow many triangles can be formed by placing vertex E along the horizontal line through D, if:
F
1,aLt
DZ__
a) d=28
&
i
b) d=35
c) d=25
O
4 Flow many triangles are possible? Label the diagram, correctly and find h to help you.
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=
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=
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=
14
b) InADEF, ZE=60°,e=12,f=9
c)lnGHl,LG=38°,i=12,g=8
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k 7
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