We are given a diagram with parallel lines cut by a transversal. We need to find the values of $x$, $y$, and $z$.

GeometryParallel LinesTransversalsAnglesSupplementary AnglesAlternate Interior AnglesLinear Pair
2025/4/6

1. Problem Description

We are given a diagram with parallel lines cut by a transversal. We need to find the values of xx, yy, and zz.

2. Solution Steps

First, we can establish a relationship between (3y11)(3y-11) and (y+19)(y+19) because the lines are parallel and these angles are alternate interior angles, which must be equal.
3y11=y+193y - 11 = y + 19
Solve for yy:
3yy=19+113y - y = 19 + 11
2y=302y = 30
y=15y = 15
Next, we observe the right angle in the diagram. The angle (4z+2)(4z+2) and the right angle (90 degrees) form a linear pair. This means they are supplementary, and their sum is 180 degrees. But it looks like it is complementary with (y+19)(y+19).
Therefore, (4z+2)+(y+19)=90(4z+2) + (y+19) = 90
Substitute y=15y = 15:
4z+2+15+19=904z + 2 + 15 + 19 = 90
4z+36=904z + 36 = 90
4z=90364z = 90 - 36
4z=544z = 54
z=544z = \frac{54}{4}
z=272=13.5z = \frac{27}{2} = 13.5
Now, let's find the value of the angle (3y11)(3y-11).
3y11=3(15)11=4511=343y - 11 = 3(15) - 11 = 45 - 11 = 34
So the angle (3y11)=34(3y-11) = 34 degrees.
Also, we can find the angle (y+19)(y+19).
y+19=15+19=34y+19 = 15+19 = 34
The angle (y+19)=34(y+19) = 34 degrees.
The angles xx and (3y11)(3y-11) are supplementary angles. Therefore, x+(3y11)=180x + (3y-11) = 180.
Substituting the value of (3y11)(3y-11):
x+34=180x + 34 = 180
x=18034x = 180 - 34
x=146x = 146

3. Final Answer

x=146x = 146
y=15y = 15
z=13.5z = 13.5

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