find the letterd angle in this figure
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in ∆ PQR
RP=RQ
•°• m=50 ( angle opposite to equal side in a ∆ are equal)
angle P + angle Q+ angel R =180° ( angle sum property of a ∆ )
50°+50°+X = 180°
100°+X= 180°
X=180°-100°=80°
X=80°
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