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How does the angle at which light hits a mirror compare to the angle at which it leaves the mirror?
The angle is the same but on the other side of the perpendicular to the surface of the mirror at the point at which the light hits the mirror.
Does a right triangle have an obtuse angle?
No, a right triangle must have a right angle (by definition). Because there is 180 degrees in a triangle and a right angle is 90 degrees, that leaves the remaining two angles having to equal 90 degrees. Therefore, a triangle cannot have an obtuse angle.
How to Prove that a triangle cannot have two right angles?
The sum of the interior angles of a triangle is 180 degrees. If one angle is 90, that leaves 90 for the other two angles. You can't have another angle of 90 and an angle of 0, so there can only be one angle in a triangle that measures 90 degrees.
Can a triangle have all three types of angles?
no The reason is because a triangle cannot have the sum of its angles exceeding 180 degrees. Having a right angle and an obtuse angle already puts the triangle at over 180 degrees because an obtuse angle must be over 90 degrees. Not to mention that this leaves no room for an acute angle.
Is it possible to draw a shape with 6 sides and 5 right angles?
Yes, it is an L shape. The sum of the angle of a hexagon is 720o. If 5 are 90o that leaves 720o - 450o = 270o for the final angle, which gives the hollow L shape.
