ABDC is a parallelogram in which diagonals AD and BC intersect at O. AE and DF are perpendiculars on BC at E and F, respectively. Which of the following is NOT true?
A. ΔABC ≅ ΔDCB
B. ΔAOE ≅ ΔDOF
C. ΔAEB ≅ ΔDFC
D. ΔADC ≅ ΔABD
Answer: Option D
Solution (By Examveda Team)
CD = AB, AC = BD
OC = OB, AO = OD
AE = DF
ΔABC ≅ ΔDCB
ΔAOE ≅ ΔDOF
ΔAEB ≅ ΔDFC
ΔADC ≅ ΔABD (×) → Should be ΔADB
This Question Belongs to Arithmetic Ability >> Geometry
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In the given figure, ∠ONY = 50° and ∠OMY = 15°. Then the value of the ∠MON is
A. 30°
B. 40°
C. 20°
D. 70°
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