I reallly need help with this

m<5 == m<1 since alternate interior angles are same value

m<3 == m<6 since alternate interior angles are same value

m<6 + m<5 + m<2 = m<1 + m<2 + m<3 = 180

Step-by-step explanation:

The use of alternate interior angles definition allows for you to make this completion.  You can use this since you have a line intersecting a point on two parallel lines.  From here, you know that the measures of the angles are the same as the measure of the line, thus you have proven the internal sum of angles to be 180 degrees.

there are no short passages to look at

3x + 18 = 147°

step-by-step explanation:

3x + 18 = 147°, because the value of the central angle is equal to the value of the arc formed by it.

i hope i you.