त्रिभुज का क्षेत्रफल ज्ञात कीजिए जिसके शीर्ष हैं |
`(i) (2,3), (-1,0), (2,-4)`
`(ii) (-5,-1), (3,-5), (5,2)`

Find the area of the triangle whose vertices are: (i) (2,3), (-1,0), (2,-4) (ii) (-5,-1), (3,-5), (5, 2)

Find the area of the triangle whose vertices are (i)\ \ \ (2,3)," "(-1,0)," "(2,-4) (i i)(-5, -1)," "(3, -5)," "(5,2)

Find the area of the triangle whose vertices are quad (i)quad (2,3),(-1,0),(2,-4)(ii)(-5,-1),(3,-5),(5,2)

Find the area of the triangle whose vertices are (i) (2, 3), (–1, 0), (2, – 4) (ii) (–5, –1), (3, –5), (5, 2)

Plot the following points and check whether they are collinear or not (i) (1,3), (-1,-1), (-2,-3) " " (ii) (1,1), (2,-3), (-1,-2) (iii) (0,0),(2,2), (5,5)

Evaluate : (ii) (2)/(3)+(-4)/(5)-(1)/(3)-(2)/(5)

Evaluate : (ii) (2)/(3)+(-4)/(5)+(1)/(3)+(2)/(5)

Find the octants in which the followings points lie: (i) (2,3,4) (ii) (2,3,-4) (iii) (-1,-2,3) (iv) (-3,-4,-5) (v) (-1,2,5) (vi) (2,-1,-3) (vii) (1,-3,4) (viii) (-2,-3,5)