Classify the following triangle. check all that apply.
80
o
a. isosceles
ob. obtuse
c. scalene
d. right
e. equilateral
f. acute

It is an Acute triangle

Step-by-step explanation:

A right triangle is 90 degrees

In geometry, an equilateral triangle is a triangle in which all three sides are equal. In the familiar Euclidean geometry, an equilateral triangle is also equiangular; that is, all three internal angles are also congruent to each other and are each 60°.

a obtuse triangle is any angle from 91 to 179 degrees

an acute triangle is any angle from 1 to 89 degrees

a scalene triangle is a triangle when no sides are equal

and isosceles triangle has only two sides equal

plz thank me!

32

step-by-step explanation:

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two