Extracted text: PROBLEMS 1. The equilateral triangular lamina A B C is placed parallel to the H. P. and having the following data : A=( 2, 3), B=(7, 3) left of A. The distance of projectors between A and B 12 cms . %3D The lamina having a central equilateral hole whose area = 1/4 the area of the lamina ( the sides of the hole being parallel to those of the lamina ). Required : Find the side - length of the lamina and that of the hole. (ii) Draw, scale 1:1 , the ELEVATION & PLAN of the lamina . (iii) Project a view on an AUXILIARY PLANE perpendicular to the V. (i) P. and making 45° with the H. P.