Angle - The space between two rays or lines that meet at a point., Ray - A straight line that starts at a point and continues forever in one direction., Arm (of an angle) - One of the two lines or rays that form an angle., Vertex - The point where two arms of an angle meet., Degree (°) - The unit used to measure the size of an angle., Acute Angle - An angle that is less than 90°., Right Angle - An angle that measures exactly 90°., Obtuse Angle - An angle that is more than 90° but less than 180°., Straight Angle - An angle that forms a straight line and measures exactly 180°., Reflex Angle - An angle greater than 180° but less than 360°., Revolution - A full turn, which measures 360°., Adjacent Angles - Angles that share a common vertex and side, and are next to each other., Complementary Angles - Two angles whose measures add up to 90°., Supplementary Angles - Two angles whose measures add up to 180°., Vertically Opposite Angles - Angles opposite each other when two lines cross; they are always equal., Angles at a Point - Angles that meet at a single point; their sum is always 360°., Parallel Lines - Lines that are always the same distance apart and never meet., Alternate Angles - Angles on opposite sides of a transversal but inside parallel lines; they are equal.,

Maths Angles

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