We are given a triangle with a line segment inside that is parallel to one of the sides. We are given four angle measures: $68^\circ$, $(3x-15)^\circ$, $2x^\circ$, and $(y^2)^\circ$. We want to find the values of $x$ and $y$.

GeometryTrianglesParallel LinesAngle PropertiesAlgebra
2025/4/1

1. Problem Description

We are given a triangle with a line segment inside that is parallel to one of the sides. We are given four angle measures: 6868^\circ, (3x15)(3x-15)^\circ, 2x2x^\circ, and (y2)(y^2)^\circ. We want to find the values of xx and yy.

2. Solution Steps

Since the line segment is parallel to the base of the larger triangle, the angle with measure 2x2x^\circ is corresponding to the 6868^\circ angle, which implies that 2x=682x = 68. Solving for xx:
2x=682x = 68
x=682x = \frac{68}{2}
x=34x = 34
Now, we know the angles in the large triangle are 6868^\circ, (3x15)(3x-15)^\circ, and (y2)(y^2)^\circ. Since the angles in a triangle add up to 180180^\circ, we have:
68+(3x15)+y2=18068 + (3x-15) + y^2 = 180
Substitute x=34x = 34:
68+(3(34)15)+y2=18068 + (3(34)-15) + y^2 = 180
68+(10215)+y2=18068 + (102 - 15) + y^2 = 180
68+87+y2=18068 + 87 + y^2 = 180
155+y2=180155 + y^2 = 180
y2=180155y^2 = 180 - 155
y2=25y^2 = 25
Taking the square root of both sides, we get:
y=±5y = \pm 5
However, since angles are positive values, we have to consider only the positive value for y, then y=5y = 5.

3. Final Answer

x=34x = 34
y=5y = 5

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