If you wan't to show that a pentagon has no right angles, then don't put any right angle signs in the figure.
That's exactly what the box means! That box is there to show that an angle is right, as right angles can have different properties than acute or obtuse angles.
Because a right angle is a right angle.
Assuming your question is what makes a right-angle, it is an angle of 90o .
because a right angle is right and a left angle is wrong
To show it is a right angle, and that it is perfectly square.
If you wan't to show that a pentagon has no right angles, then don't put any right angle signs in the figure.
90
Two lines that form a right angle are Perpendicular. This can be show by an upside down T.
This is not possible. If a triangle is a Right angled triangle then the sum of the two angles which are not right will be = 90 [Angle Sum Property] That's why you see.
270 degree
That's exactly what the box means! That box is there to show that an angle is right, as right angles can have different properties than acute or obtuse angles.
a right angle is a right angle
A kite :) /\ \/
Draw a right angle (90o). Bisect the right angle and there will be two 45o angles. Bisect one of the 45o angles and there will be one 45o angle and two 22.5o angles. A 67.5o angle includes the 45o angle and the 22.5o angle next to it, totaling 67.5o.
Because a right angle is a right angle.
A right angle is an angle of 90 degrees.