PLEASE HELP ME ANSWER THIS CORRECTLY! THIS IS MY 1st PART OF EXAM! PLEASE PLEASE PLEASEE!

A plus B equals D

Step-by-step explanation:

Because if you add the angles of A and B together, it will always equal D, or the third corner, because if it didn't it wouldn't be a triangle. Sorry, isn't the best explanation but that's all I've got lol.

As triangle "angles" that add up to 180, I will use the angle as an example, if ∠a is 80° and ∠b is 40°. ∠80 + ∠40 = ∠120.

For a triangle, the total angle is 180° and ∠c would be 60°. The same goes to supplementary which is 180° striaght line, if ∠c is 60° then ∠d is 120°. In conclusion as of my explanation, ∠a + ∠b = ∠d is that triangle and supplementary have the same total angle of 180°.

hope this .

r3t40

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)