Sides in a quadrilateral ABCD the four line segments ABBC.CD and DA are called its sides.

Diagonals in the quadrilateral ABCD the line segments AC and BD are called its diagonals.

Sides the three line segments ABBC and CA that form the triangle ABC are called the sides of the triangle ABC.

AB and CD are respectively the smallest and largest sides of a quadrilateral ABCD. Show that angleA gt angleC and angleB gt angleC .

In a quadrilateral ABCD, show that (AB+BC+CD+DA)gt(AC+BD) .

In a quadrilateral ABCD, show that (AB+BC+CD+DA)lt2(BD+AC).

ABCD is a quadrilateral. Forces vec(AB), vec(CB), vec(CD) and vec(DA) act along its sides. What is their resultant ?

ABCD is a quadrilateral. Force vec(AB), vec(CB), vec(CD) and vec(DA) act along its sides. What is their resultant ?

In Figure 3, a circle touches all the four sides of a quadrilateral ABCD whose sides are AB = 6cm,BC=9cm and CD=8cm. Find the length of side AD.

ABCD is a quadrilateral.Forces AB,CB,CD and DA act along its sides.What is their resultant?