Duplicate of hyphens and dashes

It was a moment of perfection because she put the final brush stroke on her painting

Dashes do need a space before but not after.

When a hyphen is placed at the end of a line, it must be placed at the end of a syllable.

My 10-year old twins are excited about the ice-cream-tasting tour we’ve added to the itinerary.

She was extremely hungry--she hadn’t eaten all day--but she still had two more hours before dinner.

Hyphens do not need a space before or after.

You can use a hyphen in all of the following except which one?

Use the dash sparingly and dramatically.

A good way to see if you need hyphens between words is to see if the words make sense if you change their order.

The state-of-the-art technology in the museum fascinated even the youngest members of the group.

He jumped for joy it was a surprise after all--he made it on the team.

Dashes and hyphens are used the same way.

The once-in-a-lifetime opportunity to visit Italy with her family made her eager to plan every detail.

Layla studied many hours for the test--twenty in all and she ended up with a perfect grade.

At the final round of the spelling bee--the one word to determine the winner--she instantly knew how to spell it.

A dash is only used in place of commas.