Answer :
Answer:
Option C.
Step-by-step explanation:
In △ONM and △SRQ,
[tex]\angle ONM\cong \angle SRQ[/tex]
[tex]NM=10[/tex]
[tex]SR=20[/tex]
[tex]NO=8[/tex]
[tex]QR=x[/tex]
We need to find the value of x that will make △ONM similar to △SRQ by the SAS similarity theorem.
According to SAS similarity theorem, two triangle are similar if two corresponding sides in both triangles are proportional and the included angle in both are congruent.
It is given that [tex]\angle ONM\cong \angle SRQ[/tex]. So, both triangles are similar by SAS if
[tex]\dfrac{NO}{NM}=\dfrac{SR}{QR}[/tex]
Substitute the given values.
[tex]\dfrac{8}{10}=\dfrac{20}{x}[/tex]
[tex]8\times x=20\times 10[/tex]
[tex]8x=200[/tex]
Divide both sides by 8.
[tex]x=\dfrac{200}{8}[/tex]
[tex]x=25[/tex]
Therefore, the correct option is C.
