• construct an isosceles triangle whose base is 5cm and vertical angle is 72

this is wat i came up wid see if the following helps

in isosceles tri. atleast any 2 sides hav to equal so make a base AB of 5cm then construct an angle QAB of 72 degree on the ray QA cut of anothre 5cm. where the 5 cm cuts mark dat point as C now join CB. your tri angle is ready

its isosceles cauz AB nd AC measure 5 cm

hope this helps:)