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Using a protractor, you place the "elbow" of the triangle under "0"-- zero. Line up the big black like that is in the middle of the protractor- the straight part to one side. Using a pencil, place it right on top of the other side. Read the number on the curved edge. You should get a number no more than 90 degrees on any one angle.

All angles of a triangle-3 angles.... equal 180 when they are added together.

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Q: How do you measure the internal angles of a triangle?
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Can a triangle have segments that measure 105 degrees and 90degrees?

If you mean the internal angles, No. The 3 internal angles of any triangle will and must add up to 180 degrees.


Two angles of a triangle measure 15 and 85 degrees. What is the measure for the third angle?

The internal angles of a triangle always total 180º. So 180º - (15º + 85º) = 80º.


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A triangle has three internal angles and three external angles, for a total of six angles.


How do you measure the two angles of a triangle?

There are three angles in a triangle but to measure them you would use a protractor.


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The sum of the internal angles in a triangle is equal to 180 degrees. An equiangular triangle, otherwise known as an equilateral triangle, has three angles of the same length, and three angles of the same size. The size of each angle is 180 / 3 = 60 degrees.


Does a quadrilateral triangle have exactly 3 congruent angles?

A quadrilateral shape has four sides and four internal angles. A triangle has three sides and three internal angles. Therefore there is no such thing as a quadrilateral triangle.


Two angles of a triangle measure seventy four degrees and forty one degrees. What is the measure of the missing angle?

Since the sum of the internal angles of a plane triangle is 180 degrees, the measure of the missing angle is 65 degrees. 180 - 74 - 41 = 65 degrees.


If two angles of a triangle each measure 50 then what is the measure of the third one?

The sum of all the internal angles of a triangle is 180. If two of them are each 50, then the third one must be 180 - (2 x 50) = 180 - 100 = 80.


What is the measure of the third angle if you 75 degrees and 75 degrees?

If you're referring to the internal angles of a triangle - the missing angle would be 30 degrees. Remember - in a flat triangle - the internal angles always add up to 180. Therefore - add up the angles you know, then subtract that from 180.


Does an equilateral triangle has angles?

All triangles have 3 internal angles. If drawn on a flat plane (that is redundant, but you could imagine a triangle on a sphere or some other shape) the internal angles will add to 180 degrees. In an equilateral triangle all three internal angles are equal.


Does a triangle have 6 obtuse interior angles?

A triangle has only 3 interior angles. It may have either 3 acute internal angles or 2 acute and 1 obtuse internal angles.