Question

geometry formula for 10th

Answer 1

Euclid's geometry formulas are:-
i) Distance formula=
$\sqrt{ {(x2 - x1)}^{2} + {(y2 - y1)}^{2} }$
if,
A________C___________B
(x1,y1). (x,y) (x2,y2)
C divides the line in m:n

ii) Section formula
$x = \frac{mx2 + nx1}{m + n}$
$y = \frac{my2 + ny1}{m + n}$
iii)Mid point formula
$x = \frac{ x2 + x1}{2}$
$y = \frac{y2 + y1}{2}$
iv)Area of triangle
(consider ABC is a ∆)


$\frac{1}{2} \times x1(y2 - y3) + x2(y3 - y1) + x3(y1 - y2)$
..... hope this helps you......