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The angles are 40, 80 and 60 degrees.

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Q: The sum of the first two angles of a triangle are twice the measure of the third angle The first angle is half of the second angle What are the three angles?
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If two angles of a triangle are copmplimentary what is the measure of the third angle?

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


Find the measures of the angles of a triangle if the measures of one angle is twice the measure of a second angle and the third angle measures 3 times the second angle decreased by 12?

Let the second angle of the triangle be A. Then angle 1 = 2A : and angle 3 = 3A - 12 The internal angles of a triangle total 180° therefore :- 2A + A + (3A - 12) = 180 6A - 12 = 180 : 6A = 192 : A = 32 The angles measure 64° , 32° and 84° .


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

180- total of the first two angles= 3rd angle


What is the measure of the third angle of the triangle if the measures of two angles of a triangle are 35deg and 45deg?

The missing angle measure is 100 degrees.


The measure of an exterior angle of a triangle is120 degrees the interior angles that are not adjacent to this exterior angle are congruent find the measure of the interior angles of the triangle?

They are all 60 degrees.


How do you classify a triangle by its angles?

If all three angles of a triangle measure less that 90 degrees (if all three angles are acute), the triangle is an acute triangle. A triangle that has a right angle (an angle the measures exactly 90 degrees) is a right triangle. (The other 2 angles will be acute angles.) A triangle that has an angle that is greater than 90 degrees (an obtuse angle), is an obtuse triangle. (The other 2 angles will be acute angles.)


How do you know the measure of each angle in an equilateral triangle using what you know about equilateral triangles and the degree measure of a circle or a straight angle?

the sum of the angles of a plane triangle is always 180° In an equilateral triangle, each of the angles is = Therefore, the angles of an equilateral triangle are 60°


Exterior angle property of a triangle?

measure of exterior angle of triangle is equal to sum of interior angles. for eg. In triangle ABC, angle C is exterior angle angle A and angle B are interior angles so, C=A+B


These do not have any right angles or angles whose measure are larger than a right angle?

A Triangle which do not have a right angle.


What is the angle bisector of a triangle?

It is a straight line which divides an interior angle of the triangle into two angles of equal measure.


What kind of triangle has the measure 45 45 and 90?

If you mean angles then it is a right angle triangle or an isosceles right angle triangle


What if two angles of a triangle are complemenatr what is the measure of the third angle?

The sum of two complementary angles is 90 degrees. The three angles of a triangle add up to 180 degrees. Hence, if you subtract the complementary angles from 180, you have the measure of the third angle: 180 - 90 = 90 (this is the third angle) As a rule, if two angles of a triangle are complementary, the third angle is a right angle (90 deg). The three angles together form a right triangle.