Answer:
The sum of the other two angles must add on to [tex]45^{\circ}[/tex]
Step-by-step explanation:
It is given that PQR is a triangle and the measure of the [tex]{\angle}QPR=135^{\circ}[/tex].
Now, we know that the sum of all the angles of the triangle must be equal to 180°, and it is given that the measure of the [tex]{\angle}QPR=135^{\circ}[/tex], therefore, the sum of the other two angles must add on to [tex]45^{\circ}[/tex] in order to fulfill the condition that the sum of the triangle is 180°.