1) the sum of all three angles in a triangle is always 180, so number 5 is w=80
2)I assume they mean x. since the x angle and the 70 angle are a linear pair they must add to 180, so x has to be 110
3) the top 60 angle makes a vertical angles with the angle right below it. since vertical angles are congruent, the angle below has to be 60 also. again all 3 must add to 180 so o is also 60
4) these are all linear pairs. every angle shown has to be 90
Answer:
The answer is 9.
Step-by-step explanation:
Because 7 + 9 + 11 + 13 = 40, 9 is the 2nd number in the problem.
10 pieces because five plus five is ten
Step-by-step explanation:
Since the two sides of the triangle are equal and (it appears) the angle
is bisected by
, then we can say that
and
are equivalent.
Knowing this, we can set the two lines equal to each other and solve for
:




Since we need to find
, we need to plug in
into its equation:



