An angle of 65° can not be trisected using a compass and straight edge.
45 and 90 degree angles
A 10 degree angle cannot be constructed using only a compass and straight edge.
true
Constructions that are impossible using only a compass and straightedge include Trisecting an angle Squaring a circle Doubling a cube
As a general rule, no.
45 and 90 degree angles
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.
A 10 degree angle cannot be constructed using only a compass and straight edge.
False. It is impossible to trisect any angle using only a compass and straightedge, as proven by Pierre Wantzel in 1837. While some angles can be trisected using these tools, the general case for all angles cannot be achieved through classical construction methods.
A compass and a straightedge
True
true
True -
True
Yes
no
True.