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.
Three ! The answer is in the question !
One example of a sentence using the word "trisect" is: "In geometry, to trisect an angle means to divide it into three equal parts." The term "trisect" specifically refers to dividing something into three equal parts or segments, commonly used in mathematics and geometry.
3. trisect means three
To trisect a right angle form an equilateral triangle with one vertex at the right angle and then bisect that angle of the equilateral triangle. (It is impossible to trisect a general angle using only compass and straight edge - the right angle is a specific exception.)
an angle cannot be trisected accurately by using geometrical methods.
trisect
trisect
three
Right
three
An equilateral triangle on on of the arms of the right angle.
True