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Brrunno [24]
3 years ago
15

Can someone please help I will give you 30 points and brainliest if the answer is right also no links please

Mathematics
1 answer:
Naya [18.7K]3 years ago
3 0

Answer:

x = 9

Step-by-step explanation:

Exterior Angle property of a triangle:

The Exterior Angle property states that:

<em>"</em><em>The</em><em> </em><em>exterior</em><em> </em><em>angle</em><em> </em><em>of</em><em> </em><em>a</em><em> </em><em>triangle</em><em>(</em><em>the</em><em> </em><em>Angle</em><em> </em><em>obtained</em><em> </em><em>by</em><em> </em><em>extending</em><em> </em><em>one</em><em> </em><em>of</em><em> </em><em>the</em><em> </em><em>sides</em><em> </em><em>of</em><em> </em><em>the</em><em> </em><em>triangle</em><em>)</em><em> </em><em>is</em><em> </em><em>equal</em><em> </em><em>to</em><em> </em><em>the</em><em> </em><em>sum</em><em> </em><em>of</em><em> </em><em>it's</em><em> </em><em>interior</em><em> </em><em>opposite</em><em> </em><em>angles</em><em>.</em><em>"</em>

<u>In the given triangle RST:</u>

∠VRS is the exterior angle, and

∠RTS and ∠RST are the interior opposite angles.

By using the above listed property,

∠VRS = ∠RTS + ∠RST

<em>(</em><em>Substituting</em><em> </em><em>the</em><em> </em><em>values</em><em> </em><em>of</em><em> </em><em>of</em><em> </em><em>angles</em><em> </em><em>from</em><em> </em><em>the</em><em> </em><em>figure</em><em>)</em>

=> (9x + 2) = 51 + (3x + 5)

=> 9x + 2 = 51 + 3x + 5

<em>isolating</em><em> </em><em>x</em><em> </em>

<em>=</em>> 9x - 3x = 51 + 5 - 2

=> 6x = 54

<em>dividing</em><em> </em><em>both</em><em> </em><em>sides</em><em> </em><em>by</em><em> </em><em>6</em>

=> <u>x = 9 </u>

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