angle - An ____ is a measure of turn, measured in degrees.  It is formed by two rays that share a common endpoint., vertex - The common endpoint of an angle is called a ________., ray - A _____ is the name given to a line/side of an angle., Perpendicular - _______ lines meet at 90° to form a right angle., straight line - Angles at a point on a _____ _____ add up to 180°., protractor - A _________ is used to measure angles, typically in the form of a flat semi-circle marked with degrees along the curved edge., right angle - There are 90° in a right angle., degree - A _______ is a unit of measurement that measures the magnitude of an angle. The symbol for a degree is °. A complete circle rotates at 360°., acute - An ____ angle is less than 90°., obtuse - An _____ angle is more than 90° but less than 180°., reflex - A ______ angle is more than 180° but less than 360°., Corresponding - _______ angles formed by parallel lines are equal and form a sort of 'F'-shape., Parallel lines - _____ _____ are the distance apart everywhere along their length., interior - The _____ angles of a polygon are the angles inside each corner., Supplementary - _______ angles add up to 180°., exterior - The ____ angle of a polygon is the angle between a side and a line that extends out from one of .neighbouring sides, Congruent - _______ shapes are exactly equal in size and shape: equal sides and equal angles., Similar - _______ shapes are the same shape but different in size. Their angles are equal in size., alternate - When a straight lines crosses two parallel lines, it forms two pairs of _________ angles (in a sort of Z-shape); _______ angles are equal., Full turn - There are 360° in a full turn., vertically opposite - When two straight lines intersect, two pairs of ______ _____ angles are formed; _________ _______ angles are equal. , allied - When a straight line crosses two parallel limes to make a kind of 'C'-shape, the interior angles are known as _______ angles and add up to 180°., polygon - A ________ is a shape whose sides are all straight., sum - The sum of the exterior angles of any polygon is 360°., Complementary - _______ angles add up to 90°.,

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