Geometry of Lines Crossword Puzzle

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QUESTIONS LIST:

perpendicular : lines that meet at a right angle.
diameter : a line passing through the centre of a circle, touching two points on the edge.
protractor : instrument used to measure angles in degrees.
reflex : an angle greater than 180° but less than 360°.
centre : the middle point of a circle.
straight : an angle equal to 180°.
circumference : the distance around a circle.
acute : an angle less than 90°.
obtuse : an angle greater than 90° but less than 180°.
angle : the figure formed when two rays meet at a point.
segment : a part of a circle separated by a chord.
circle : a round shape where all points are the same distance from the centre.
right : an angle exactly 90°.
parallel : lines that never meet, no matter how far extended.
chord : a line joining two points on a circle.
radius : a line from the centre of a circle to the edge.