The two angles of the triangle are 40 degrees and 80 degrees. Determine which corner of the triangle

The two angles of the triangle are 40 degrees and 80 degrees. Determine which corner of the triangle its large side lies against.

Step one.

First, we need to determine what the unknown angle in this triangle will be equal to, because from the condition of this task we know that its other two angles are equal to 40 ° and 80 °, respectively:

180 – (80 + 40) = 60.

Step two.

Now we need to compare the angles in order to calculate the largest of them, because from the school curriculum we know that there will be a large side opposite a larger angle:

80> 40;

80> 60.

Answer: The large side will lie opposite the 80 ° angle.