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you work out how much it is to 180

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Q: How do you know the other 2 angles if only 1 angle is given?
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If angles a and b are alternate angles what is the measure of angle b if angle a measures 105?

Alternate angles are equal and so angle b is also 105 degrees


In triangle mnp the measure of angle m is 24 the measure of angle n is five times the measure of angle p find the measure of angle n?

130 Degrees180-24=156So you know that the sum of all the angles is 180, so the sum of the other two angles is 156. You Know that angle p is equal to some number x. And you know the angle n is five times some number x or 5x. You know the sum of the two angles numerically and algebraically.6x=156x=26n=5xn=5(26)n=130


What is the angle that a right angle triangle has?

The angle directly opposite the hypotenuse is always 90o in a right angle triangle and if you know the other sides you can work out the other angles using one of the three trigonometry equations. Sin, Tan or Cos then use the inverse and you will get the degree.


How do you find the measure of the second angle when it gives you only one angle measure?

You can use various properties of angles to find the measure of the second angle. For example, if you can see that the two angles form a right angle, then you know they add up to 90°, so you can subtract the known measure from 90° to find the measure of the other.


How do you find an angle when you know one other angle and two of the sides of a triangle?

If these two sides are opposite to these angles, and you know one of the angles, you can use the Law of Sines to find the other angle. For example, in the triangle ABC the side a is opposite to the angle A, and the side b is opposite to the angle B. If you know the lengths of these sides, a and b, and you know the measure of the angle B, then sin A/a = sin B/b multiply by a to both sides; sin A = asin B Use your calculator to find the value of arcsin(value of asin b), which is the measure of the angle A. So, Press 2ND, sin, value of asin B, ).

Related questions

How do you find the measure of an angle in a triangle?

Add together the given angles, or the angles you already know or have been given measures for, and then subtract the added numbers from 180 and that is you answer.


How do you find all the angles of a triangle with only one angle available?

it is impossible to do because you need at least 2 angles to tell the other one All unknown sides and angles of a triangle can be found only when one side and two angles, two sides and the included angle, two sides and an angle opposite one of them, or three sides are given. All you will know is that the sum of the other two angels is 180 - (value of known angle).


How do you determine the measurement of a missing angle in a angle?

To find the measure of an angle, you need to know the size of the entire angle and the other angles within the angle. Then, you subtract the smaller, known angles from the entire, large angle and you should get the measure of the missing angle.


A right triangle has 28 degrees angle what are the measures of the other angles?

The sum of the internal angles of a triangle is 180 degrees. Since you know this is a right-angled triangle, you know that one side is 90 degrees. If the other angle is 28 degrees, then you know that the remaining angle must be 180 - 90 - 28 = 62 degrees.


How do you find angles of a parallelogram?

To find the angles of a parallelogram, you have to know at least one angle (although it could be an interior or an exterior angle). There are several facts about all parallelograms:the sum of the interior angles is 360˚ (true for all quadrilaterals)opposite angles are congruent (angles that are diagonal in parallelograms have the same measure)consecutive angles are supplementary (angles that are connected by a single side add up to 180˚)If you know any of the interior angles, you can use a combination of the above rules to find the rest. If all you know is an exterior angle, then use the fact that an interior angle and its exterior angle are supplementary (because they are a linear pair--they make a line) to find the measure of the interior angle; then use the rules given above.


What is the measure of each angle of an isosceles triangle?

We have no way to know that, from the information given in the question. All we know, if the triangle is isosceles, is that two of the angles are equal, and that all three angles sum to 180 degrees.


How do you find the size of an angle without using a protractor?

If the angle is a lone, random angle, I believe you would need a protractor to determine the precise size of the angle (in "degrees"). However, you could, in this case, roughly guess as to whether the angle is acute, obtuse, or right (if the little rectangle is shown in the angle). Of course, if an angle is in a position where one can determine its measure using known postulates or theorems, finding the size of this angle becomes much easier. For example, if you know the measure of one angle and you must determine the measure of another angle, but these two angles are vertical angles, or are corresponding angles (by the corresponding angles postulate), you can indeed determine the measure of this angle without a protractor. Additionally, another example is that if you knew a pair of angles were either supplementary angles, complementary angles, or a linear pair, and you were given the measure of one of these angles, you could determine the measure of the other angle without a protractor. Therefore, it depends on the angle you're looking at.


Is it possible for a triangle to have a 54 degree angle and a 126 degree angle?

No because the 3 angles of a triangle add up to 180 degrees and the given 2 angles already add up to 180 degrees


Can you find the third angle measure of a triangle if you know the other 2 angle measures?

It is 180-2 known angles = unknown angle ***** A bit more information: Note: all angles of a triangle add up to 180 degrees. Therefore, if you know the sum of two angles, simply make up to 180 degrees.


If angles a and b are alternate angles what is the measure of angle b if angle a measures 105?

Alternate angles are equal and so angle b is also 105 degrees


If the sum of the Angles of an isosceles triangle is 180 degrees and the third Angle is 45 degrees less than the measure of the Angles what is the measure of the other 2 Angles?

you need more information. all you know is the measure of third angle. which is 35. by the way, angles doesn't have to be capitalized.


What is the measurement of quadrilateral angle?

A quadrilateral is a shape with four sides... It doesn't have *one* angle. The sum of the interior angles of a quadrilateral will always be 360 degrees, however, it is impossible to know the value an individual angle of a quadrilateral with the information given.