Matchstick Puzzle 3

Strike a light! Reckon you can master these matchstick puzzles?

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Turn a wheel into three triangles

That wheel's a pretty thing isn't it? Almost seems a shame to mess it up, but that's what you'll have to do in order to turn it into three equilateral triangles. Only by moving four matches, mind.
Turn a wheel into three triangles

Not quite as lovely as the last set-up, but there you go: three equilateral triangles. (That means triangles whose sides are the same size, not three identical triangles. But then you knew that, right?)

Turn a wheel into three triangles