1.A(n) is a line drawn to help complete a proof 2. the sum of th e measures of the of the triangle is equal to the corresponding exterior angle.

What is (28 + 7 + 6 + 3) x 1/2 show your work

When you answer this can you explain

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?