Posted by Max R on Tuesday, November 1, 2011 at 9:33pm.
Two angles <3 and <5 are supplementary to <4. If m<5 is 78 degrees, what is m<3? (A diagram is required, label the diagram)

geometry  Steve, Wednesday, November 2, 2011 at 11:10am
I take this to mean that each of <3 and <5 is supplementary to <4. So,
m<3 + m<4 = 180
m<5 + m<4 = 180
In that case,
78 + m<4 = 180
m<4 = 102
Now, knowing that, w can find m<3:
m<4 + 102 = 180
m<4 = 72
This makes sense, since angles supplementary to a given angle are equal.
Answer This Question
Related Questions
 Geometry  Why do complementary and supplementary angles not have to be adjacent...
 Math  Find the measures of two supplementary angles if the difference of their ...
 Geometry Check please  Is the following definition of complementary angles ...
 Geometry  Is the following definiiton of supplementary reversible? If yes, ...
 Please help with MATH  Why do complementary and supplementary angles not have ...
 MathsGeometry(Loci)  A port has two radar stations at P and Q which are 20 km...
 Geometry help check ??  Given: <2 = <4, m<2 = 110 Proof: m<3 = 70 &...
 geometry  The supplementary angles are supplementary angles. Determine the ...
 Grade 6 Maths  Find a formula which gives the number of matches, S, required to...
 geometry  draw a diagram to explain how it is possible for 2 central angles to ...
More Related Questions