Recall that the angles inside of a triangle must add up to \(\displaystyle 180\). The small square in the corner of the triangle indicates that it is a right angle that measures \(\displaystyle 90\) degrees.

Thus, for the triangle in question,

\(\displaystyle 50+90+x=180\)

\(\displaystyle 140+x=180\)

\(\displaystyle x=40\)

Recall that the angles inside of a triangle must add up to \(\displaystyle 180\). The small square in the corner of the triangle indicates that it is a right angle that measures \(\displaystyle 90\) degrees.

Thus, for the triangle in question,

\(\displaystyle 67+90+x=180\)

\(\displaystyle 157+x=180\)

\(\displaystyle x=23\)

Recall that the angles inside of a triangle must add up to \(\displaystyle 180\). The small square in the corner of the triangle indicates that it is a right angle that measures \(\displaystyle 90\) degrees.

Thus, for the triangle in question,

\(\displaystyle 49+90+x=180\)

\(\displaystyle 139+x=180\)

\(\displaystyle x=41\)

Recall that the angles inside of a triangle must add up to \(\displaystyle 180\). The small square in the corner of the triangle indicates that it is a right angle that measures \(\displaystyle 90\) degrees.

Thus, for the triangle in question,

\(\displaystyle 71+90+x=180\)

\(\displaystyle 161+x=180\)

\(\displaystyle x=19\)

Recall that the angles inside of a triangle must add up to \(\displaystyle 180\). The small square in the corner of the triangle indicates that it is a right angle that measures \(\displaystyle 90\) degrees.

Thus, for the triangle in question,

\(\displaystyle 41+90+x=180\)

\(\displaystyle 131+x=180\)

\(\displaystyle x=49\)

Recall that the angles inside of a triangle must add up to \(\displaystyle 180\). The small square in the corner of the triangle indicates that it is a right angle that measures \(\displaystyle 90\) degrees.

Thus, for the triangle in question,

\(\displaystyle 21+90+x=180\)

\(\displaystyle 111+x=180\)

\(\displaystyle x=69\)

Recall that the angles inside of a triangle must add up to \(\displaystyle 180\). The small square in the corner of the triangle indicates that it is a right angle that measures \(\displaystyle 90\) degrees.

Thus, for the triangle in question,

\(\displaystyle 26+90+x=180\)

\(\displaystyle 116+x=180\)

\(\displaystyle x=64\)

Recall that the angles inside of a triangle must add up to \(\displaystyle 180\). The small square in the corner of the triangle indicates that it is a right angle that measures \(\displaystyle 90\) degrees.

Thus, for the triangle in question,

\(\displaystyle 33+90+x=180\)

\(\displaystyle 123+x=180\)

\(\displaystyle x=57\)

Recall that the angles inside of a triangle must add up to \(\displaystyle 180\). The small square in the corner of the triangle indicates that it is a right angle that measures \(\displaystyle 90\) degrees.

Thus, for the triangle in question,

\(\displaystyle 38+90+x=180\)

\(\displaystyle 128+x=180\)

\(\displaystyle x=52\)

Recall that the angles inside of a triangle must add up to \(\displaystyle 180\). The small square in the corner of the triangle indicates that it is a right angle that measures \(\displaystyle 90\) degrees.

Thus, for the triangle in question,

\(\displaystyle 45+90+x=180\)

\(\displaystyle 135+x=180\)

\(\displaystyle x=45\)