That would be the letter, "Ell". "L" "E", "F", "H", and "T" also have right angles in them, but "L" is the only letter with just one right angle in it.
I am L.
An angle can be named with one capital letter when the point represented by the letter is at the vertex (the endpoint of the two rays, lines, etc.)
The letter A.
Any letter can be used for any angle. It is conventional, though, to go in one direction around any polygon.
It is: "angle a is not a right angle" or "angle a is greater than or less than a right angle".
No but the capital letter L has a right angle
A capital T
I am L.
It is a right angle of 90 degrees
Well, you can write all capital letters and find out.
A right angle of 90 degrees can be seen in the letter F
An angle can be named with one capital letter.
The capital letter E has no acute angles but it does have right angles.
It could be capital letter A
An angle can be named with one capital letter when the point represented by the letter is at the vertex (the endpoint of the two rays, lines, etc.)
Because a right angle is 90 degrees and perpendicular lines meet at right angles as for example as in the capital letter L
A quarter of a turn is a right angle or 90 degrees which looks like the capital letter L