Mastering Triangle Sum Theorem

In a triangle, the angles are $$50^\circ$$ , $$60^\circ$$ , and $$x^\circ$$ . What is the value of $$x$$ ?

(a)  

A triangle has angles $$x^\circ$$ , $$45^\circ$$ , and $$75^\circ$$ . Calculate the value of $$x$$ .

(a)  

If one angle of a triangle is $$90^\circ$$ and the second angle is $$30^\circ$$ , what is the measure of the third angle?

In a triangle, two angles are equal and the third angle is $$40^\circ$$ . What is the measure of each of the equal angles?

A triangle has angles $$x^\circ$$ , $$2x^\circ$$ , and $$3x^\circ$$ . Find the value of $$x$$ .

In a triangle, the angles are $$x^\circ$$ , $$2x^\circ$$ , and $$90^\circ$$ . Find the value of $$x$$ .

A triangle has angles $$x^\circ$$ , $$x^\circ$$ , and $$90^\circ$$ . Calculate the value of $$x$$ .

Using the Angle Sum Theorem, what is the measure of the missing angle?

 If two angles of a triangle measure 42° and 20°, then the measure of the third angle is ​ (a)