45 Degrees on each side means it is equal, for an "equilateral" triangle.
The answer to the first question is 7(3.14)/6.
the answer to the second question is quadrant 2
Answer: m∠D = 65°
Step-by-step explanation:
The best solve method for problems like this is say the sum of the angle values equals 360.
2x-15+2x-15+x+x = 360
Then from here you just simplify.
4x+2x-30 = 360
6x = 390
x = 65
So the measure of Angle D equals 65 degrees.