a straight angle a full angle (= a circle) alternate (Z-shape) corresponding lies on a straight equals 360º angles are opposite to (F-shape) angles line and equals 180º each other and equal are equal α=β α=β a and b are x and y are co-interior Angles in a vertically opposite angles, they add up to quadrilateral angles and they are 180º (4-sided shape) add equal up to 360° 2D shapes a square has four a rectangle has four a parallelogram has a quadrilateral is equal sides and four right angles and opposite parallel opposite sides any shape with right angles sides are equal and equal opposite four straight sides angles a trapezium has one a kite has two pairs of a pentagon has five a rhombus has 4 pair of parallel sides equal sides sides and five angles straight equal sides. The opposite sides are parallel and the
a straight angle lies on a straight line and equals 180º a full angle (= a circle) equals 360º alternate (Z-shape) angles are opposite to each other and equal α=β corresponding (F-shape) angles are equal α=β a and b are vertically opposite angles and they are equal x and y are co-interior angles, they add up to 180º Angles in a quadrilateral (4-sided shape) add up to 360° 2D shapes a square has four equal sides and four right angles a rectangle has four right angles and opposite sides are equal a parallelogram has parallel opposite sides and equal opposite angles a quadrilateral is any shape with four straight sides a trapezium has one pair of parallel sides a kite has two pairs of equal sides a pentagon has five sides and five angles a rhombus has 4 straight equal sides. The opposite sides are parallel and the