Answer:
13
Step-by-step explanation:
first term (a) = 8
last term ( ) = 56
sum (S) = 416
number of terms (n) = ?
equation
S = n/2 (a+)
416 = n/2 (8+56)
416 = n/2 (64)
416 = 32n
n = 416/32 = 13
< 1 and < 4 are alternate interior angles
A triangle is 180 degrees. Depending on their angles: Right Angle - 90 degrees
Acute Angle - less than 90 degrees and Obtuse Angle greater than 90 degrees and under 180 degrees. Hope that helps.
Answer:
a
Step-by-step explanation: