Quadrant, Right angle triangle, cube, cuboid, rectangle, square and others
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The diagonals of a square and a rhombus cross at right angles.
Oh, dude, a triangle has zero square corners! I mean, it's called a triangle for a reason, right? Like, if it had square corners, it would be a square or a rectangle or something. But nope, triangles are all about those three angles and three sides, no squares in sight!
They are different because a square has 4 right angles and a triangle has no right angles they are also alike because they are both shapes
At least 4 - on the four corners of the base. But there could be two more if the opposite pairs of sloping edges met at the apex at right angles.
Two opposite right-angles, whose corners share the same crossing point, are vertical angles.