PSAT Math - 45/45/90 Right Isosceles Triangles

1

What is the area of a square that has a diagonal whose endpoints in the coordinate plane are located at (-8, 6) and (2, -4)?

2

What is the area of a square that has a diagonal whose endpoints in the coordinate plane are located at (-8, 6) and (2, -4)?

3

An isosceles triangle has a base of 6 and a height of 4. What is the perimeter of the triangle?

4

An isosceles triangle has a base of 6 and a height of 4. What is the perimeter of the triangle?

45/45/90 Right Isosceles Triangles