How do you find the value of x to find the measurement of the angle?

How do you find the value of x to find the measurement of the angle? (2x - 10)0 (x + 20)0 In this lesson you will learn how to find the measurements of angles created when parallel lines are cut by a transversal by using alternate interior angles and alternate exterior angles. t Vertical Angles 2 1 p 4 3 Adjacent Angles 6 5 8 q 7 Corresponding Angles t Exterior Angles 1 2 p 3 4 Interior Angles 5 6 q 7 8 Exterior Angles t Alternate Interior Angles 1 2 p 3 4 5 6 q 7 8 2x - 10 = x + 20 x - 10 = 20 x = 30 (x + 20)0 (2x - 10)0 (30 + 20)0 (2(30) - 10)0 500 500 t Alternate Exterior Angles 1 2 p 3 4 5 6 q 7 8 7y + 6 = 4y + 30 t 3y + 6 = 30 (4y + 30)0 3y = 24 p y = 8 7(8) + 6 56 + 6 620 4(8) + 30 32 + 6 620 q (7y + 6)0 In this lesson you have learned how to find the measurements of angles created when parallel lines are cut by a transversal by using alternate interior angles and alternate exterior angles. t (x-10)0 Find the value of x. p q 1040

Name all the alternate exterior angle pairs.

10 9 11 12

Name all the alternate interior angle pairs.

1 4 5 6 2 3 8 7 t

Find the measure of angles 1, 7 and 5

1 2 3 p 1010 5 6 8 q 7 t

Find x and y.

p (y2) 0 x0 (8y - 15)0 q t Find the value of x and the measurement of each angle. (5x + 21) 0 p (12x + 7)0 q Find the value of x and the measurement of each angle. (5x - 5)0 (3x + 15)0