Lines m and n are parallel. they are cut by transversal l. what other angles is equal to 100 degrees

Angles 4, 5 and 8 are equal to 100 degrees.

Step-by-step explanation:

We have been given two parallel lines m and n that are cut by transversal l.

We know that when two parallel lines are cut by a transversal, then alternate interior angles, corresponding angles and alternate exterior angles formed are equal.

We can see that angle 4 and 100 degree angles are vertical angles, therefore, measure of angle 4 is equal to 100 degrees.

Angle 4 and angle 5 are alternate interior angles, therefore, measure of angle 5 is also 100 degrees.

Angle 8 and 100 degrees angle are alternate exterior angles, therefore, measure of angle 8 is also 100 degrees.

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6