prove the 90 degree is aright angle
Right angle means that lines are perpendicular to each other .Perpendicular means dividing the angle into two equal parts .i.e 90 °.
Prove that each angle of a rectangle is 90∘.
A 90-degree angle is also called a ___ angle.
According to law of reflection, How this statement(angle of incidence = angle of reflection= 90 degree) is correct? how both equal to 90 or 0 degree?
Which best describes a 90 degree angle?