Question

Using the following figure, identify relationship of the angles or sum of the angles?

Answer 1

`/_1, /_3, /_4, /_5` are acute (`<90^o`).
`/_6` is right (`=90^o`).
`/_2` is obtuse (`>90^o`).
Sum of all of them is full angle (`=360^o`).
(continue below)

Explanation:

`/_1+/_6+/_5` is straight angle (`=180^o`).
Since `/_6=90^o`, `/_1+/_5` is right angle (`=90^o`).
Angles `/_3` and `/_4` seems to be congruent (equal in value).
`/_2+/_3+/_4` is straight angle (`=180^o`).