In a quadrilateral ABCD, angles A, B, C and D are in the ratio 3:2:1:4 Prove that AD is parallel to BC.

In a quadrilateral A B C D , the angles A ,\ B ,\ C\ a n d\ D are in the ratio 1:2:3:4 . Find the measure of each angle of the quadrilateral.

In a quadrilateral A B C D , the angles A ,\ B ,\ C\ a n d\ D are in the ratio 1:2:3: 4. Find the measure of each angles of the quadrilateral.

In a quadrilateral A B C D , the angles A ,\ B ,\ C\ a n d\ D are in the ratio 1:2:4:5 . Find the measure of each angles of the quadrilateral.

In a quadrilateral A B C D , the angles A ,\ B ,\ C\ a n d\ D are in the ratio 1:2:4: 5. Find the measure of each angle of the quadrilateral.

In a quadrilateral ABCD, AB = CD and angle B = angle C . Prove that AD is parallel to BC.

If angles A, B, C and D of the quadrilateral ABCD, taken in order are in the ratio 3 : 7 : 6 : 4, then ABCD is a

In a quadrilateral ABCD, AB = CD and angle B = angle C . Prove that AC = AB

In a cyclic quadrilateral ABCD the diagonal AC bisects the angle BCD. Prove that the diagonal BD is parallel to the tangent to the circle at point A.

In quadrilateral ABCD, AB=DC and AD=BC. Prove that the sides AB and DC are parallel to each other.

A (1, 1), B (5, 1), C (4, 2) and D (2, 2) are vertices of a quadrilateral. Name the quadrilateral ABCD. A, B, C, and D are reflected in the origin on to A', B', C' and D' respectively. Locate A', B', C' and D' on the graph sheet and write their co-ordinates. Are D, A, A' and D' collinear ?