review triangles 2 equal sides/angles = isosceles 90 degrees = right angle 3 different lengths = scalene 3 equal sides/angles = equilateral less than 90 = acute more than 90 = obtuse
the sum of the angles in a triangle = 180 degrees
one approach write the expression for the sum of the angles set = 180 solve for x find the value of the angles
did you get x = 6?
yes thank you very much
scalene yes you are welcome
can I ask you a few more?
sum of angles on a straight line = 180 <2 + <3 = <5
do you need more details?
is the answer 42?
180 -<5 = < 4 180 - (<2 + <3) = <4 <4 = <4 180 -<5 = 180 - (<2 + <3) therefore <5 = (<2 + < 3)
what do you mean is the answer 42?
that's what I thought it was at first but I guess I did something totally different
are you mixing the questions? for the first one the angles were 46, 42 and 92 different angles so scalene triangle
for the 2nd question which interior angles have the same value as angle 5? note that angle 1 has the same value as < 5 corresponding exterior angles
angles 2 and 4 have the same value as 5
no angles 2 and 3 together have the same value as angle 5
so <2 and <3 are the remote interior angles to <5
review the post above to see the proof
ok I did that thank you I have a couple more questions
you are welcome
right isosceles triangle