An equilateral triangle ABC of 50mm side has its corner A in HP and side BC perpendicular to HP and inclined at 45° to VP. Draw its projections.

Draw the triangle in an auxiliary position first
Since BC is perpendicular to HP, it appears as a point in top view
BC makes 45° with VP, so in front view it's inclined at 45°
Corner A is in HP, so in FV it lies on XY
Project point A in top view
Complete both projections ensuring 50mm sides are maintained