LCHL Review of Junior Cycle co-ordinate geometry
LCHL Area of a triangle given the coordinates of the vertices
LCHL Divide a line segment internally in the ratio m:n
LCHL The perpendicular distance from a point to a line
LCHL The angle between two lines
Co-ordinating the plane. Linear relationships in real-life contexts and representing these relationships in tabular and graphical form. Equivalence of the slope of the graph and the rate of change of the relationship. Comparing linear relationships in real-life contexts, paying particular attention to the
significance of the start value and the rate of change. The significance of the point of intersection of two linear relationships.
Interactive Files & Worksheets for Geometry & Trigonometry
I should be able to:
Foundation Level
– select and use suitable strategies (graphic, numeric, mental) for finding solutions to real-life problems involving up to two linear relationships
Ordinary Level
– use slopes to show that two lines are • parallel • perpendicular
– recognise the fact that the relationship ax + by + c = 0 is linear
– solve problems involving slopes of lines
− calculate the area of a triangle
− recognise that (x-h)2 + (y-k)2 = r2represents the relationship between the x and y co-ordinates of points on a circle centre (h, k) and radius r
− solve problems involving a line and a circle with centre (0, 0)
• the perpendicular distance from a point to a line