Solution
Classify the triangle to acute, obtuse, right or not triangle;
[tex]21,28,35[/tex]
Using the pythagoras theorem to verify
Hypotenuse = 35
Opposite = 21
Adjacent = 28
[tex]\begin{gathered} Hyp^2=opp^2+adj^2 \\ 35^2=28^2+21^2 \\ 1225=784+441 \\ 1225=1225 \end{gathered}[/tex]
There is equality in the equation ,
Hence pythagoras theorem is prooved
Therefore it is a right angle triangle
Final answer is Option C
