It is given that l || m to prove `angle1` is supplement to `angle8`. Write reasons for the statement.
`{:("Statement","Reasons"),(i. l||m,......... ),(ii. angle1= angle5,............),(iii. angle5+angle8=180^(@),...........),(iv angle5+angle8=180^(@),............),(v.angle1 "is supplement to" angle8,.............):}`

The angles of a triangle are in the ratio 1:3:5 then the greatest angle is

Two complementary angles are in the ratio 4:5. Find the angles.

Measure of supplement of an angle is 3 times the measure of the angle . Find the measure of the angle.

If an angle is equal to one third of its supplement, its measure is equal to

Procedure : (i) Draw a circle of many radius with centre O. (ii) Mark any four points A,B,C and D on the boundary. Make a cyclic quadrilateral ABCD and name the angles as in Fig. 1 (iii) Make a replica of the cyclic quadrilateral ABCD with the help of tracing paper (iv) Make the cutout of the angles A,B,C and D as in Fig. 2 (v) Paste the angle cutout angle1,angle2,angle3 and angle4 adjacent to the angles opposite to A,B,C and D as in Fig . 3 Measure the angles angle1+angle3 , and angle2+angle4 . Observe the Fig. 3 and complete the following : {:((i),angleA+angleC= . . . . . . . ,(ii),angleB+angleD =. . . . . . .),((iii),angleC+angleA= . . . . . . .,(iv),angleD+angleB= . . . . . . .):} 2. Sum of opposite angles of a cyclic quadrilateral is . . . . . . . . 3. The opposite angles of a cyclic quadrilateral is . . . . . . .