# Triangles. help me with these questions please

• Jul 6th 2012, 07:30 PM
elmothemonkey
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..
• Jul 6th 2012, 07:50 PM
richard1234
Re: Triangles. help me with these questions 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.
• Jul 6th 2012, 11:02 PM
elmothemonkey
Re: Triangles. help me with these questions please
thanks.. but what about number two? it has three.. :|| what am i going to do?
• Jul 6th 2012, 11:48 PM
Wilmer
Re: Triangles. help me with these questions please
Quote:

Originally Posted by elmothemonkey
...what am i going to do?

Quit blaming your teacher and start listening in class...
• Jul 7th 2012, 12:03 AM
elmothemonkey
Re: Triangles. help me with these questions please
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.. :D
• Jul 7th 2012, 12:51 AM
Wilmer
Re: Triangles. help me with these questions please
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...
• Jul 7th 2012, 01:02 AM
elmothemonkey
Re: Triangles. help me with these questions please
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..
• Jul 7th 2012, 01:29 AM
Wilmer
Re: Triangles. help me with these questions please
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 (Wink)

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 ? (Lipssealed)
• Jul 7th 2012, 02:12 AM
elmothemonkey
Re: Triangles. help me with these questions please
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
• Jul 7th 2012, 06:13 AM
Wilmer
Re: Triangles. help me with these questions please
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 ?????
• Jul 7th 2012, 06:16 AM
elmothemonkey
Re: Triangles. help me with these questions please
thanks :D they're 68deg :) solved.. :D ty again
• Jul 7th 2012, 07:18 AM
Wilmer
Re: Triangles. help me with these questions please
Fine, Elmo...try HARDER next time !