Question

fill ups
a) if three angles of quadrilateral are 70 ,85 , and 120 the measure of fourth angle will be ....................​

Answer 1

Answer:

85°

Step-by-step explanation:

Angles :- 70°, 85°, 120°

Sum of angles :- 275

To get the fourth angle add all the angles and substract from 360° ( As the sum of all the angles in a quadrilateral is 360° ).

The fourth angle = 360 - 275

= 85°

HOPE IT HELPS YOU MATE!

Answer 2

Answer:

85°

Step-by-step explanation:

1st angle=70°

2nd angle= 85°

3rd angle= 120°

Angle sum property says that the sum of a quadrilateral is 360°

Therefore,

70°+85°+120°+ 4th angle= 360°

=>275°+4th angle= 360°

=>4th angle = 360°-275°

=>4th angle=85°

Hope it is clear...

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