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Right Angle. A right angle has a 90° angle. If you put two right angles together, it make a Perpendicular line. It also creates a square so that is why people put a square whe measuring it. True fact, right angles are usually found by measuring the corner of a square.

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A cube is a 3D shape that has 6 sides with the same area on each sides.

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A line that goes up and down but never goes to the side and never goes diagonal.

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A shape that has three sides and three points.

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An acute angle is less than 90˚. It has to rays. A is an example of an acute angle.

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Horizontal line is a straight line that has no arrow, and it’s like the subtracting sigh but longer.

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A shape with four sides and four vertices.

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An angle is a measure of how much something has moved around a fixed point.

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Lines that run along side (next to) each other and NEVER touch.

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A right angle is an angle that is exactly 90 degrees which is a straight line.