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The three angles of a quadrilateral are 55,73,105 what is the fourth angle

2 Answers

1 vote
The quadrilateral must equal 360°. You already know 3 of the sides so add them up and subtract it from 360.

360-233= 127

The fourth angle is 127°
User Rickimaru
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7.6k points
5 votes

Answer:

127°

Explanation:

In a quadrilateral, sum of four angles is 360°.

Consider the fourth angle x.

so,

55° + 73° + 105° + x = 360°

x = 360° - 233°

x = 127°

User IAmNaN
by
7.2k points