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Q: Two angles that can be trisected with a straightedge and compass are a 90 angle and what angle?

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Yes and the trisections will form 4 angles of 22.5

A compass and a straightedge

True -

True

True

Related questions

45 and 90 degree angles

An angle of 65° can not be trisected using a compass and straight edge.

First things first, the actual statement isn't "you can't trisect an angle" but rather "you can't trisect one with only a compass and straightedge." Some angles can be easily trisected--a 90-degree angle trisects into 30-degree segments-but to do it you need a protractor. Anyway, to check your work measure the angle you trisected and divide by three. If your trisections match, you got it right.

Yes and the trisections will form 4 angles of 22.5

A compass and a straightedge

true

True -

True

True

no

Yes

True.