Straight Lines Flashcards
Area of Quadrilateral Shortcut
Angle between two straight lines formula
can all points of equiliateral triangle be rational?
no atleast one is irrational
collinear points condition
Whats Orthocentre and short way to find it
orthocentre is the intersection of altitudes drawn from the vertices
find any two altitudes equation and intersect point of them
For finding circumcentre of a triangle what do to!?
Assume a point h,k and put distance formula with 2 points with it 2 time and then find h,k
Centroid,circumcentre,orthocenter relation
In which triangle does the centroid,circumcentre,orthocentre,incentre points lie in a line
isoceles triangle
Distance between two parallel lines formula
change
Parametric formula of line
When do we use the parametric formula of line
remove
Image and FOP of a point w.r.t line formula
Image of (a,b) w.r.t. x=y
(b,a)
The determinant of h,g,f,c for finding the type of curve
Condition for line,parabola,circle,hyperbola,ellipse
Angle between POSL formula
Angle bisector of POSL formula
angle bisector formula for any two lines
How to identify acute and obtuse angle bisectors
perpendicular distance from a point on the line
the position of two points formula or condiitoin to find if two points are on same side of the line or the opposite sides
three lines concurrent formula/condition
what can be the concepts used in this questions of finding the lines BC
