Triangle
while True:
Line = int(input("Enter the number of lines in the triangle (or 0 to quit): "))
if Line == 0:
break
for i in range(Line, 0, -1):
for j in range(Line-i):
print(' ', end='')
for j in range(i*2-1):
if j == 0 or j == (i*2-2) or i == Line:
print('*', end='')
else:
print(' ', end='')
print()
