+0  
 
0
60
4
avatar

The angle measures of three angles of a quadrilateral are given. Find the measure of the fourth angle of the quadrilateral.

 

(a)    70°, 90°, 115°

 ° 

 

(b)    50°, 90°, 90°

 ° 

 

(c)    57°, 67°, 124°

 ° 

 

(d)    60°, 95°, 120°

85 °

 

I got 85 for D

Guest Sep 19, 2018
 #1
avatar+13044 
+1

Each of the sets of 4 angles should add to a total of 360  for a convex quadrilateral,,,,so your answer is correct.

ElectricPavlov  Sep 19, 2018
 #2
avatar
0

What about a, b and c

Guest Sep 19, 2018
 #3
avatar+27044 
0

To find (a) calculate  360 - (70 + 90 + 115)

 

Use the same approach on the others. 

Alan  Sep 19, 2018
 #4
avatar
0

OKAY thanks 

Guest Sep 20, 2018

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