Which angle is an exterior angle of the triangle?

○ 1
○ 2
○ 3
○ 4

the answer is 4

Step-by-step explanation:

the angle between a side of a rectilinear figure and an adjacent side extended outward.

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation: