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Answers
Answer:
Answer:
Given :
Angles of a quadraliteral are (p + 25)°, 2p°, (2p - 15)° and (p + 20)°
To Find :
The value of largest angle
Solution :
The sum of all four interior angles of a quadraliteral is 360°.
\begin{gathered} \\ : \implies \sf \: (p+25) {}^{ \circ} + 2p {}^{ \circ} + (2p - 15) {}^{ \circ} + (p+20) {}^{ \circ} = {360}^{ \circ} \\ \\ \end{gathered}
:⟹(p+25)
∘
+2p
∘
+(2p−15)
∘
+(p+20)
∘
=360
∘
\begin{gathered} \\ : \implies \sf \: 6p + 30 = {360}^{ \circ} \\ \\ \end{gathered}
:⟹6p+30=360
∘
\begin{gathered} \\ : \implies \sf \: 6p = 360 - 30 \\ \\ \end{gathered}
:⟹6p=360−30
\begin{gathered} \\ : \implies \sf \: 6p = 330 \\ \\ \end{gathered}
:⟹6p=330
\begin{gathered} \\ : \implies \sf \: p = \dfrac{330}{6} \\ \\ \end{gathered}
:⟹p=
6
330
\begin{gathered} \\ : \implies{\underline{\boxed{\pink{\mathfrak{p = 55}}}}} \: \bigstar \\ \\ \end{gathered}
:⟹
p=55
★
Then the values of angles are ,
(p + 25)° = 55 + 25 = 80°
2p° = 55(2) = 110°
(2p - 15)° = 2(55) - 15 = 110 - 15 = 95°
(p + 20)° = 55 + 20 = 75°
Among the given angles of quadrilateral , 110° is largest angle.
Hence ,
The value of largest angle among the given angles of quadrilateral is 110°. So , Option(b) is the required answer