How do you find `abs( 1 + i )`?

Related questions

• What is the complex number plane?
• Which vectors define the complex number plane?
• What is the modulus of a complex number?
• How do I graph the complex number `3+4i` in the complex plane?
• How do I graph the complex number `2-3i` in the complex plane?
• How do I graph the complex number `-4+2i` in the complex plane?
• How do I graph the number 3 in the complex number plane?
• How do I graph the number `4i` in the complex number plane?
• How do I use graphing in the complex plane to add `2+4i` and `5+3i`?
• How do I use graphing in the complex plane to subtract `3+4i` from `-2+2i`?