Yup. The angles of a triangle must add up to 180°—no more, no less.
These angles do:

As for which kind, we can classify it based on the 90°-angle. Since that's a right angle, we have a
right triangle. Additionally, it is scalene.
Answer:
A = 216 cm^2
P = 80 cm
Step-by-step explanation:
l = 12
w = 18
As the object is rectangular, the area is height * width and the perimeter is
2(height + width) as there are two of each side.
12 * 18 = 216 U^2 U = unit of measurement, I would presume for a poster you use cm so its 216 cm^2
12 + 18 = 40
40 * 2 = 80 cm
Answer:
5x + 25
Step-by-step explanation:
2x+29+3x+4
Step 1: Arrange it:- 2x+3x+29-4
Step 2:- Add and Subtract the terms:- 5x + 25
HOPE IT HELPS!
Step-by-step explanation:
d = z - 9
d = 10 - 9 ----> substitute
d = 1
it would be 18 student tickets and 12 adult tickets
18x25= 450
12x30 = 360
360+450 = 810