Mathematics

Problem

Determine whether a triangle with side lengths

15\,\text{cm},\;20\,\text{cm},\;25\,\text{cm}

is right-angled. a) Yes, the right angle is opposite the

20\,\text{cm}

side b) No, the triangle is obtuse-angled c) Yes, the right angle is opposite the

25\,\text{cm}

side d) No, the triangle is acute-angled