In the given figure. ABCD is a trapezium in which AB|| DC and E is the mid-point of AD, if EF||DC, then show that `EF=(1)/(2)(AB+DC)`.

In figure, ABCD is a trapezium in which AB I I DC. Find the length of DC.

In the given figure ABCD is a trapezium with AB || DC. E and F are respectively midpoint of AD and BC. Prove that, EF=1/(2)(AB+CD)

In the following figure ABCD is a trapezium in which AB|| DC . Find the measdure of /_C .

ABCD is a trapezium in which AB || DC and E is the mid-point of AD. If F be a point on BC such that EF || DC, then prove that EF=1/2(AB+DC).

ABCD is a trapezium in which AB||DC and let E be the mid point of AD. Let F be a point on BC such that EF||AB. Prove that EF=1/2(AB+DC)

In the given figure ABCD is a trapezium with AB || Dc and AD = BC prove that angleA=angleB

In the given figure ABCD is a trapezium with AB || Dc and AD = BC prove that angleC=angleD

In the given figure ABCD is a trapezium in which AB||DC and AB:DC=3:2, The ratio of the areas of /_AOB and /_COD is

ABCD is a trapezium, in which AD||BC, E and F are the mid-points of AB and CD respectively, then EF is:

In the given figure ABCD is a trapezium with AB || Dc and AD = BC prove that diagonal AC = diagonal BD