Q-1 In the following figure,FD||BC||AE and AC||ED. Find the value of x.
Q-2 ABCD is a trapezium such that AB||CD, ∠A : ∠D = 2 :1, ∠B : ∠C = 7 : 5. Find the angles of the trapezium.
Q-3 ABCD is a parallelogram. Find the value of x, y and z
Q-4 The adjacent angles of a parallelogram are (2x – 4)° and (3x – 1)°. Find the measures of all angles of the parallelogram.
Q-5 In a quadrilateral ABCD, ∠D is equal to 150° and ∠A = ∠B = ∠C. Find ∠A, ∠B and ∠C.
Q. 6: In quadrilaterals,
(i) which of them have their diagonals bisecting each other?
(ii) which of them have their diagonal perpendicular to each other?
(iii) which of them have equal diagonals?
Q-7 Find the sum of all internal angle of a pentagon that is regular.
Q-8 If an exterior angle of a regular polygon is 45°, then find the number of its sides.
Q-9 If an interior angle of a regular polygon is 162°, then find the number of its sides.
Q-10 Find the measure of an interior angle of a regular polygon having 15 sides.
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