# dist3: Distances and the Pythagorean Theorem (Single-Choice)

Exercise template for computing the distance (single-choice) between two randomly-drawn points in a Cartesian coordinate system.

**Name:**

`dist3`

**Type:**

**Description:**

Computing the (Euclidean) distance between two randomly-drawn points by using the Pythagorean Theorem. In addition to the correct solution, four false alternatives are generated through

`num_to_schoice()`

by providing two common errors along with a range and minimal delta for two further random solutions.**Solution feedback:**

Yes

**Randomization:**

Random numbers and graphics

**Mathematical notation:**

Yes

**Verbatim R input/output:**

No

**Images:**

Yes

**Other supplements:**

No

*(Note that the HTML output contains mathematical equations in MathML, rendered by MathJax using ‘mathjax = TRUE’. Instead it is also possible to use ‘converter = “pandoc-mathjax”’ so that LaTeX equations are rendered by MathJax directly.)*

**Demo code:**

```
library("exams")
set.seed(403)
exams2html("dist3.Rmd", mathjax = TRUE)
set.seed(403)
exams2pdf("dist3.Rmd")
set.seed(403)
exams2html("dist3.Rnw", mathjax = TRUE)
set.seed(403)
exams2pdf("dist3.Rnw")
```