Angle qrs is a straight angle. the measure of ∠2 is 60° more than the measure of ∠1. what is the measure of ∠1?

60

120

90

40

60

Step-by-step explanation:

⇒∠1+∠2=180      (1)

and

⇒∠2=60+∠1

so the upper eq (1) becomes

⇒∠1+60+∠1=180

⇒2∠1+60=180

⇒2∠1=180-60

⇒2∠1=120

dividing both side by 2

⇒∠1=60

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.

do i do it on a graph?

step-by-step explanation: