Question

What is the perimeter and area of a square with vertices of (2,0),(0,2),(-2,0), and (0,-2)

Answer 1

Draw a square in the coordinate system and divide it into 2 triangles

Find the area of one triangle

`S=(1)/(2) ah\\h=2, a=4\\S=(1)/(2) *4*2=4`

The area of a square is the area of two triangles

`S=2*4=8`

Answer: S=8

P.S. Hello from Russia and sorry for my bad english :)