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

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1 Answer
Zor Shekhtman
Jul 3, 2016

∠1,∠3,∠4,∠5 are acute (<90o).
∠6 is right (=90o).
∠2 is obtuse (>90o).
Sum of all of them is full angle (=360o).
(continue below)

Explanation:

∠1+∠6+∠5 is straight angle (=180o).
Since ∠6=90o, ∠1+∠5 is right angle (=90o).
Angles ∠3 and ∠4 seems to be congruent (equal in value).
∠2+∠3+∠4 is straight angle (=180o).

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