True, There are 180° in a straight angle., A line is infinite in length., The magnitude of a right angle is 90°., Collinear points are on the same line., Perpendicular lines meet at right angles., An acute angle is less than 90°., A reflex angle is greater than 180°., A hexagon has 6 sides., False, An obtuse angle measures between 0° and 90°., A line segment is infinite in length., There are 270° in a full turn., A pentagon has 6 sides., Parallel lines meet at right angles., A right angle measures 180°., Collinear points form a polygon., An octagon has 6 sides..

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