Question

A triangle with side lengths of 8 cm, 14cm and 20 cm classify it as acute obtuse or right

Answer 1

Obtuse

Explanation:

The pythagorean theorem: a^2+b^2=c^2

Right triangles: a^2+b^2=c^2

Acute triangles: a^2+b^2>c^2

Obtuse triangles: a^2+b^2<c^2

8^2+14^2 ? 20^2

64+196 ? 400

260 < 400

The triangle is obtuse.