Question

A triangle has side lengths of 12 cm, 35 cm, and 37 cm. Classify it as acute, obtuse, or right.
acute
obtuse
right

Answer 1

It helps to first draw a scale model

Answer 2

use pythagoras's theorem

right angled if

37^2 = 12^2 + 35^2

obtuse angled if

37^2 > 35^2 + 12^2

acute angled if

37^2 < 35^2 + 12^2

Answer 3

First what type of triangle do you think it looks like right now? Second, how do you think we can check this?

Answer 4

acute? angle maybe um i kinda dont know how to check it

Answer 5

ok, let's start with a theorem: the largest/medium/smallest angle in a triangle is opposite the largest/medium/smallest side.

Answer 6

do you understand this concept?

Answer 7

yeah