How many different isosceles right triangles can be formed from three dots in the grid below? Two examples are shown.

[asy]

unitsize(0.8 cm);

int i, j;

draw((0,1)--(1,2)--(0,2)--cycle,red);

draw((0,0)--(2,0)--(2,2)--cycle,blue);

for (i = 0; i <= 2; ++i) {

for (j = 0; j <= 2; ++j) {

dot((i,j),linewidth(5*bp));

}}

[/asy]

( 3x3 dot grid )

Forumofweb2.0cal Feb 11, 2020