Math, asked by beverlyaesthetic, 8 months ago

Find the unknown angle x in each of the following triangles......plz give answer in step by step explanation.....correct answer will be marked BRAINLIEST......✌

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Answered by ItzAwesomeGirl

$\bigstar\huge\rm\underline\blue{Answer}$

According to angle sum property,

a triangle's total area is 180 degree,

so,

Let us take, unknown angle as 'x'

54+63+x = 180

117+x = 180

x = 180-117

x = 63.

Unknown angle x is equal to 63 degree

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Answered by cafatia2005

Answer:

63°

Step-by-step explanation:

ΔPQR is an Isosceles Triangle. So, ∠PQR = ∠PRQ

Sum of all interior angles of a triangle is 180°

⇒ 54° +∠PQR + ∠PRQ = 180°

⇒ 54° + 2∠PQR = 180°

⇒ 2∠PQR = 180° - 54°

⇒ 2∠PQR = 126°

⇒ ∠PQR = 126/2 = 63°

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