Classify the following triangle. Check all that apply A. equilateral
B. Isosceles
C. Acute
D. Scalene
E. Right
F. Obtuse

D, E

Step-by-step explanation:

All sides are not the same length so not A

Two sides are not the same length so not B

Not all angles are less than 90 so not C

All sides are different length so D

There is a right angle so E

Not all sides are greater than 90 so not F

E. right. if a triangle has a right angle, it is a right triangle.

Step-by-step explanation:

hope this helps

c

step-by-step explanation:

i think because what else can be a sample of every member

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°