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Q2. Three angles of a quadrilateral are 70o , 95o and 80o. The fourth angle is 

(a) 95o

(b) 105o

(c) 115o

(d) 85o

Q2. A quadrilateral ABCD is a parallelogram , if 

Q3. A diagonal of a rectangle is inclined to one side of a rectangle at 25o. The acute angle between the diagonals is 

Q4. Diagonals AC and BD of a parallelogram intersect at O. If angle BOC = 90o and angle BDC = 50o , then angle OAB is 

Q5. ABCD is a rhombus such that angle ACB = 40o. Then angle ADB is 

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