Powers of 10
4 times 105=
400,000
What angle is this?

Obtuse angle
103 times 103=
1,000,000
What is this angle?

Acute angle
102 times 103=
10,000
What angle is this?
Right angle
6 times 104
60,000
What angle is this?

Straight angle
4 times 106
4,000,000
What is this angle?

Obtuse angle