SOLUTION: <D and <E are complements and <D and <F are supplements. If m<E is three times the m<D, find the measure of all three angles. I don't know how to set this up and solve it.

Question 898167:
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
1.
2.
3.
Use 1 and 3 to solve for E and D substituting for E in 1.
Then use 2 to solve for F.

RELATED QUESTIONS
In "triangle DEF", m (answered by cleomenius)
In a triangle DEF, m〈E is three times m 〈D, and m〈F is 9 less than... (answered by ikleyn)
in triangle DEF, m angle E is three times m angle D, and m angle F is 9 less than m angle (answered by ikleyn)
What are the complements and supplements of: (y + 20)�.... (answered by Fombitz)
one angle is 4 degrees more than three times another. find the measure of each angle if (answered by KMST)
One angle is 27 less than 2 times another. Find the measure of each angle if: a.They are (answered by MathLover1)
in triangle DEF, if E is one more than three times F and D is three more than seven times (answered by Alan3354)
Assume that lines l and m are parallel. If the measure of angle E is 115�, what is... (answered by Fombitz)
The m < D is supplementary to the m < E, the m < F is supplementary to the m < E. If m < (answered by greenestamps,ikleyn)