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# 'The sum of all interior angles of a triangle is $180^\circ$.' Is this sentence a statement? Give reason.

$\begin{array}{1 1} yes \\ no \end{array}$

Toolbox:
• A sentence is a statement if it is true or false always.
The sum of all interior angles of a triangle is $180^\circ$.
This sentence is a statement because it is always true.