$A = \pi r^2$
Terms
| Term | This example | Why |
|---|---|---|
| equation | ✓ | |
| formula | ✓ | |
| identity equation | ✗ | The equation $A = \pi r^2$ is not an identity because is not true for every choice of variables $A$ and $r$, such as for $A = 0$ and $r = 1$. |
| Term | This example | Why |
|---|---|---|
| equation | ✓ | |
| formula | ✓ | |
| identity equation | ✗ | The equation $A = \pi r^2$ is not an identity because is not true for every choice of variables $A$ and $r$, such as for $A = 0$ and $r = 1$. |