The points (- 4, 0), (4, 0) and (0, 3) are the vertices of a
Let’s take;
A (- 4, 0),
B (4, 0),
C (0, 3) are the given vertices.
Now,
To calculate the distance between two given points;
Us the formula;
d2 = (x2 - x1)2 + (y2 - y1)2
d = 
So, the distance between point A and point B;
AB = 
AB = 
AB = 8
Distance between B (4, 0) and C (0, 3);
BC = 
BC = 
BC = 5
Distance between A (- 4, 0) and C (0, 3);
AC = 
AC = 
AC = 5
So, BC = AC
Hence, we can say that ΔABC is an isosceles triangle because an isosceles triangle has two sides equal.