in angle ABC, if D is mid point and DE ||BV, AC=10cm . find length of AE
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Answer:
The line segment going the mid point of any two sides of a triangle
is parallel to third side and is half of it.
∴DE=
2
1
BC,
AC
2
+BC
2
=AB
2
BC=
AB
2
−AC
2
=
100−36
BC=
64
,BC=8
DE=
2
1
BC=
2
1
(8)=4cm
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