Star triangle pattern in Python. For example, with a right-angle triangle, the number of stars on any given row is equal to the row you're on. Here's the code for that: for i in range(0,10): for j in ...

Rotating triangles into the same orientation, with the right-angle in the bottom right, makes it easier to visualise which two shapes are similar. Triangles ABC and DEF are similar. Triangle DEF ...