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55°

Q: What in the measure of the third angle of a triangle if one angle measure 80 and the other measure 45?

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The third angle of a triangle is equal to 180 degrees minus (the sum of the first two angles).

The missing angle measure is 100 degrees.

77. The sum of the three angles in a triangle equal the sum of 180 degrees

In a triangle the measure of the first angle is four times the measure of the second angle. The measure of the third angle is 18 degrees more than the second angle. What is the measure of the first angle? 68 43 17 95

The sum of the angles is 180 degrees in any triangle. So 180-140 is 40 and the third angle is 40 degrees.

Related questions

If two angles of a triangle each measure 55 what is the measure of the third angle?

45 degrees.

The third angle measures 18 degrees.

Two angles of a triangle add up to 65°. What is the measure of the third angle?

If it is a triangle then the 3rd angle is 70 degrees

The third angle is 34.5 degrees

63 degrees because 180 -39 -78 = 63

The other acute angle in that triangle is 40 degrees.

The third angle is 95 degrees because 180-18-67 = 95

45 degrees

The third angle of a triangle is equal to 180 degrees minus (the sum of the first two angles).

The missing angle measure is 100 degrees.