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Which shape has some perpendicular sides but no parallel sides?
a right triangle, a pentagon w/ a right angle, alot of shapes with right angles.
Is there an algebraic formula for determining an angle of reflection using only the angle of the ray and the angle of the wall?
Let r be the angle of the ray, and R the angle of reflection.If the wall is flat (i.e., if its angle is 0), then we know that r + R = Pi/2.Now suppose the wall has angle w. Then rotate the diagram by -w,so that the wall is now flat again, and the angles of the ray and itsreflection are now r - w and R - w, respectively.We then have (r - w) + (R - w) = Pi/2, which should give you enoughinformation to find R.
How do you work out the exterior and interior angles of a regular polygon with W sides?
Exterior angle regular polygon = 360° ÷ number of sides = 360° ÷ W Interior angle regular polygon = 180° - exterior angle regular polygon = 180° - (360° ÷ number of sides ) = 180° - (360° ÷ W)
What is a shape w 7 sides called?
A 7 sided shape is a heptagon.
What type of object has an acute angle?
objects that have an acute angle are a sideways v on a keyboard, a cheerleader w/ their arms up, and a triangle
