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In right triangle DEF
MATHEMATICS · Single correct · CBSE · Mathematics · Triangles · Triangles
Problem
In right triangle DEF,
∠
E
=
90
∘
\angle E = 90^{\circ}
∠
E
=
9
0
∘
and altitude
E
G
EG
E
G
is drawn to the hypotenuse DF. Which of the following relations is always true? (a)
E
F
2
=
D
G
⋅
D
F
EF^{2} = DG \cdot DF
E
F
2
=
D
G
⋅
D
F
(b)
D
E
2
=
D
G
⋅
D
F
DE^{2} = DG \cdot DF
D
E
2
=
D
G
⋅
D
F
(c)
D
G
⋅
F
G
=
D
E
2
DG \cdot FG = DE^{2}
D
G
⋅
F
G
=
D
E
2
(d)
D
F
2
=
D
G
⋅
F
G
DF^{2} = DG \cdot FG
D
F
2
=
D
G
⋅
F
G
Related theory
Pythagoras' Theorem
Triangle Properties
Similarity of Triangles
Similarity
Triangles
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