You can only unlock the chapter using a special code that we will send you via the Viber app. Receiving a message is free of charge and with no obligations.
My phone number:
Get a code
In compliance with the law, persons under the age of 15 can enter their phone number only in the presence of a parent or guardian.
4-character code:
Check the received code
The page will be refreshed automatically in a few seconds.
To ensure the proper functioning of the website, OpenProf uses cookies that do not store personal data. By continuing to use the website, you agree to cookies. Tell me more »
and the other 
. Draw a sketch and calculate the perimeter 
of the kite.
and the perimeter is 
. Calculate the length of the other side of the kite.
, and the length of one of its sides is 
. Calculate the length of the unknown side.
of a kite with sides 
and 
.
of the figure below.
and 
.
and height 
.
, 
, 
.
. Calculate the remaining interior angles and the perimeter of the trapezium.
