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Byju's Answer
Standard VII
Mathematics
Congruency of Triangles
Given, ABC∼...
Question
Given,
△
A
B
C
∼
△
E
D
C
.
Find the condition that must be true according to the given information.
A
¯
¯¯¯¯¯¯
¯
A
E
∥
¯
¯¯¯¯¯¯¯
¯
B
D
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B
¯
¯¯¯¯¯¯
¯
A
E
⊥
¯
¯¯¯¯¯¯¯
¯
B
D
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C
¯
¯¯¯¯¯¯
¯
A
B
∥
¯
¯¯¯¯¯¯¯
¯
D
E
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D
¯
¯¯¯¯¯¯
¯
A
B
⊥
¯
¯¯¯¯¯¯¯
¯
D
E
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Solution
The correct option is
D
¯
¯¯¯¯¯¯
¯
A
B
∥
¯
¯¯¯¯¯¯¯
¯
D
E
△
A
B
C
∼
△
E
D
C
....Given
so
∠
A
B
C
≅
∠
E
D
C
so
A
B
∥
D
E
, ( the alternate angle criteria.)
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In the given figure, ∆ABC is right angled at C and DE ⊥ AB. Prove that ∆ABC ∼ ∆ADE and hence find the length of AE and DE.