Thread: Triangles. help me with these questions please

Help please.. so my teacher gave this extremely hard geometry questions without even explaining it clearly. so i'm stucked and confused.. help me with these questions please!
as much as possible, please explain so i can do it on my own when it comes to our test.. or if you dont want to answer, just explain it to me so i can answer it on my own..
P.S: I removed numbers 1, 3, 4, 5, 6 and 8 because I already solved their answers.. thanks

2.Can a triangle have angles equal to
a. 55°, 65°, 70°
b. 53°, 64°, 73°
c. 80°, 105°, 5°
7. In (triangle)△DEF, <D, <E and <F -44° (deg), Find <D and <E




thanks guys!
thank you so much.. you don't need to answer all of them.. only if you can.. i need help here.. explain please..

The sum of the angles of any triangle is 180°. You can use that fact for nearly all of the problems.

For example, 1a. 55° + 75° + x° = 180°. Simplifying LHS gives 130° + x° = 180° --> x = 50.

thanks.. but what about number two? it has three.. :|| what am i going to do?

Originally Posted by elmothemonkey

...what am i going to do?

Quit blaming your teacher and start listening in class...

I'm sorry ^ But it's true that he didn't explain to us these questions. I'm not blaming him. I'm telling the truth..

That's not really my point:
if you do not know that a triangle has a total of 180 degrees, then there's not much
that can be done HERE to help you: you need your teacher, like it or not...

im sorry.. im really slow that why i didnt really get the questions at first and when richard1234 explained some of it i tried doing them that's why i have deleted a few of my questions already... analyzing questions are my problem. ;D but what i really cannot do is 2 and 7.. which is real confusing..

2.Can a triangle have angles equal to
a. 55°, 65°, 70°
b. 53°, 64°, 73°
c. 80°, 105°, 5°

Add the angles: is the sum = 180 degrees? If not, then NOT a triangle

7. In (triangle)△DEF, <D, <E and <F -44° (deg), Find <D and <E

YOU read that...does it make any sense? WHAT is equal to -44 ?

OH lol i'm sorry abt number 7..
it's
in triangle DEF, angle D = angle E and angle F = 44degrees ; find angle D and angle E

C'mon Elmo, that's easy...
Since angle F = 44 then angle D + angle E = 180 - 44 = 136;
and since angle D = angle E then ?????

thanks they're 68deg solved.. ty again

Fine, Elmo...try HARDER next time !