Find the missing angle
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0
Answer:
90°
Step-by-step explanation:
a +b+c+d = 360°(sum of all angles of quadrilateral is 360°)
a + 100 +110 +60= 360
a + 270° = 360°
a = 360° - 270°
a= 90°
Answered by
8
Step-by-step explanation:
here,
A+B+C+D=360°
sum of all angles of a quadrilateral =360°
A+100+110+60=360°
270°+A=360°
A=(360°-270°)= 90°
hence the missing is 90°
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