In graphs, the origin is the point where the x and y axis cross, this point is often the basis for translations of shapes,
Bearings are written in three figures, you can preface them with 0's if the angle is lower than 100, bearings always start at 0 degrees facing north, and they move in a clockwise direction,
A locus is a path formed by a point which moves according to a rule, for instance, the locus of a clock hand would be a circle around the hand because that is the path the hand takes, too draw a locus around a polygon, you must use a rounded edge for the corners,
Constructions are accurate diagrams drawn using a pair of compasses and a ruler, you can use this for constructing things like the perpendicular distance which is the shortest distance from a point to a line,
to construct a perpendicular bisector you must open a compass slightly wider than half the length of the line,
place your compass on one end of the line segment and draw an arc above and below the line,
maintaining the same compass width, do the same on the other side, place a ruler where the arcs cross and draw a line between them,

to construct an angle bisector,you place the compass on the point where the lines meet and draw an arc between the lines about half way up the lines, then you move the compass up to where you drew the arc and draw another arc in the middle of the angle, then repeat for the other side, then where those arcs cross you draw a line through them from the intersection of the original lines

to construct a perpendicular from a point on a line, you put la compass on the point, open it so it touches near to the edge of the line, then draw a dot on either side of the line, then put the compass on the first dot and draw an arc below the line, same for the second dot, then connect the arc intersect with the point,

	Criado por noajaho1 mais de 8 anos atrás

GCSE Maths Slides sobre Maths: Geometry, criado por noajaho1 em 19-01-2016.