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3 years ago

Need help thanks???!!

Mathematics

1 answer:

solniwko [45]3 years ago

3 0

Answer:

x = 78 degrees

Step-by-step explanation:

Let y represent the last angle in the triangle containing 79 degrees and x degrees.

Since the top and bottom lines are parallel, then angle y and angle 23 are alternate angles. Alternate angles are equal. Therefore,

Angle y = 23 degrees

The sum of the angles in a triangle is 180 degrees. It means that

Angle x + angle y + 79 degrees = 180 degrees. Therefore

x + 23 + 79 = 180

x + 102 = 180

Subtracting 102 from the left hand side of the equation and the right hand side of the equation, it becomes

x + 102 - 102 = 180 - 102

x = 78 degrees

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