Question

Construct a triangle DEF whose perimeter is 12 cm and angle E = angle F = 60°

Answer 1

as angle E and angle F are 60 degree both
then angle D should be 60 degree also
then all the arms are equal
then they are (12/3)cm=4cm each
now draw a 4 inch line and draw two 60 degree angels at the both end and add the angle extentions
your trangle is constructed

Answer 2

HII

HOPE IT WILL HELP YOU................................