The measurement of ∠SQR is 70.9 degrees
Explanation:
To find the total angle of any polygon, use the formula = 180(n-2)
The "n" is number of sides a polygon have. Triangle has 3 sides.
therefore n=3, substitute as n=3 in the formula above.
Total angle in a triangle =180(3-2)= 180(1)= 180 degrees
The sum of the angles in a triangle must equal to 180°
∠QRS+∠RSQ+∠SQR=180°
80°+29.1°+∠SQR= 180°
∠SQR= 180°-109.1°
The angle SQR= 70.9°