An acute-angled isoceles triangle.

An acute-angled scalene triangle.

Why is it called an acute-angled scalene triangle?

He had been a well-favored man, he said, sweeping his hand in a semicircle, which implied that his acute-angled countenance had once filled the goodly curve he described.

From that day we had a southerly wind, which drawing round to the east as we got to the south, forced us away from the land, so that from there our track to Swan River described two sides of an acute-angled triangle; the 24th placing us somewhat further than we were on the 14th, namely 700 miles west from our destination; but at length we got a favourable wind to take us in.