Fig. 4.37Exercise 4.2The angles of a quadrilateralingles of a quadrilateral are in the ratio 2: 4:5:7. Find all the angles.rilateral ABCD, LA = 72ยบ and ZC is the supplementary of ZA. The other twoIn a quadrilateralangles are 2x-10 and x +4les are 2x-10 and x + 4. Find the value of x and the measure of all the angles.BCD is a rectangle whose diagonals AC and BD intersect at 0. If LOAB =46",find ZOBCThe lengths of the diagonals of a Rhombus are 12 cm and 16 cm. Find the side of therhombus.Show that the bisectors of angles of a parallelogram form a rectangle.6IfaIl a triangle and a parallelogram lie on the same base and between the same parallels.then nrou that th e of the triangle is equal to half of the area of parallelogram.

Fig. 4.37Exercise 4.2The angles of a quadrilateralingles of a quadrila

1.	Fig. 4.37Exercise 4.2The angles of a quadrilateralingles of a quadrilateral are in the ratio 2: 4:5:7. Find all the angles.rilateral ABCD, LA = 72ยบ and ZC is the supplementary of ZA. The other twoIn a quadrilateralangles are 2x-10 and x +4les are 2x-10 and x + 4. Find the value of x and the measure of all the angles.BCD is a rectangle whose diagonals AC and BD intersect at 0. If LOAB =46",find ZOBCThe lengths of the diagonals of a Rhombus are 12 cm and 16 cm. Find the side of therhombus.Show that the bisectors of angles of a parallelogram form a rectangle.6IfaIl a triangle and a parallelogram lie on the same base and between the same parallels.then nrou that th e of the triangle is equal to half of the area of parallelogram.
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