Diagonals AC and BD of a parallelogram ABCD intersect each other at O.
If OA = 3 cm and OD = 2 cm, determine the lengths of AC and BD
Diagonals AC and BD of a quadrilateral ABCD intersect each other at O such that OA : OC = 3: 2. Is ABCD a parallelogram? Why or why not?
Three angles of a quadrilateral ABCD are equal. Is it a parallelogram? Why or why not?
Diagonals of a rhombus are equal and perpendicular to each other. Is this statement true? Give reason for your answer.
D and E are the mid-points of the sides AB and AC respectively of ∆ABC. DE is
produced to F. To prove that CF is equal and parallel to DA, we need an additional
information which is
(A) ∠DAE = ∠EFC
(B) AE = EF
(C) DE = EF
(D) ∠ADE = ∠ECF.
Would you agree with the statement that economic marginalisation and social marginalisation are
interlinked? Why?
. Which of the following is not true for a parallelogram?
(A) opposite sides are equal
(B) opposite angles are equal
(C) opposite angles are bisected by the diagonals
(D) diagonals bisect each other.
The diagonals AC and BD of a parallelogram ABCD intersect each other at the
point O. If ∠DAC = 32º and ∠AOB = 70º, then ∠DBC is equal to
(A) 24º (B) 86º (C) 38º (D) 32º
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