Find ∠C and hence classify each triangle according to:

a. the number of equal sides it has, and

b. the type of angles it has, e. g. equilateral triangle & acute-angled

triangle.

Given Angles ∠C Number of equal

sides

Types of Triangle

∠A = 20

∠B = 60

a) 0

b) scalene and obtuse

Step-by-step explanation:

∠A = 20

∠B = 60

∠C = 180 - 20 - 60 = 100 (obtuse)

Since none of the angles are equal, no sides are equal either

So, it's a scalene triangle

Since one angle is obtuse, it's an obtuse triangle

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.

sorry not sure

step-by-step explanation: