These lines are:, perpendicular lines, obtuse angle, parallel lines, This is an: , acute angle, acute line, obtuse angle, This is a:, Ray, Line segment, angle, Right angle is...................., 90o, 00, 180o, We can measure angles with :, Ruler, Meter, Protractor, Straight angle is :, 90o, 180o, 60o, The angle which is less than 90o is called:, Straight, obtuse, acute, A line without end point is called:, Ray, point, line.

Lines and angles

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