Question

Obtuse or acute??

Answer 1

based on the angle measurements.. I'm not sure.
because two of them are less than 90 so it could be acute, but then you have the 120..

Answer 2

*I mean 130.. it's greater than 90 so wouldn't that be obtuse? :3

Answer 3

< is acute, anything 90 degrees or less is acute
_/ is obtuse, anything 90 degrees or more is obtuse

Answer 4

So yeah obtuse :3

Answer 5

@ilmc1 so even though there are two angles less than 90 (acute) it still has the one greater than 90 so that makes it obtuse?

Answer 6

Ah, that I do not know, sorry... XP

Answer 7

m< ABC is indeed obtuse.

Answer 8

@yamyam70 thank you.. i thought it would be acute at first because it has angles <20 and <22 which are less than 90. but then there is an angle <137 which is greater than 90. would it be obtuse or acute then?

Answer 9

The other two are acute.

Answer 10

@jcari you are correct :)

Answer 11

so that makes the entire triangle obtuse?

Answer 12

yes :)

Answer 13

@yamyam70 ah thank you!
@ilmc1 that's alright thank you for helping me : )

Answer 14

and one more thing ,

Answer 15

Anytime :)

Answer 16

only 1 angle of a triangle can be bigger than 90... so you will always have at least 2 angles less than 90. If the biggest angle is bigger than 90 degrees, the triangle is obtuse

Answer 17

@phi good explanation, thanks!

Answer 18

total angle measure of a triangle is 180* , yeah and @phi explained it well :)