# How do you find the measure of a triangle with one angle?

## How do you find the measure of a triangle with one angle?

The formula is sin A/a = sin B/b, where “A” and “B” are angles and “a” and “b” are the lengths of the sides opposite these angles, respectively. Suppose that you are solving a triangle for which one angle equals 25 degrees and the side opposite this angle measures 7 units.

## What triangle measures 50 degrees?

isosceles
If a triangle is isosceles, two of the angles must be congruent. So the angle must be either 50 degrees or 80 degrees.

What is a 30 60 triangle?

A 30-60-90 triangle is a special right triangle (a right triangle being any triangle that contains a 90 degree angle) that always has degree angles of 30 degrees, 60 degrees, and 90 degrees. The side opposite the 60° angle will be the middle length, because 60 degrees is the mid-sized degree angle in this triangle.

### What is a 180 degree triangle?

One of the first things we all learned about triangles is that the sum of the interior angles is 180 degrees. A straight angle is just a straight line, which is where it gets its name. We’ve placed three points on it to represent the three angles of a triangle. The measure of this straight angle ABC is 180 degrees.

### What is the measure of angle 1?

A measure of one degree ( 1° ) is equivalent to a rotation of 1360 of a complete revolution. To measure angles, it is convenient to mark degrees on the circumference of a circle . Thus, a complete revolution is 360° , half a revolution is 180° , a quarter of a revolution is 90° and so forth.

How do you find the degree of a triangle?

If we add all three angles in any triangle we get 180 degrees. So, the measure of angle A + angle B + angle C = 180 degrees. This is true for any triangle in the world of geometry. We can use this idea to find the measure of angle(s) where the degree measure is missing or not given.

## How do you use CAH?

The hypotenuse is always opposite the right angle. The sine of an angle is equal to the side opposite the angle divided by the hypotenuse….Sohcahtoa Calculator.

Soh… Sine = Opposite / Hypotenuse
…cah… Cosine = Adjacent / Hypotenuse
…toa Tangent = Opposite / Adjacent

## What is the ASA formula?

ASA formula is one of the criteria used to determine congruence. “if two angles of one triangle, and the side contained between these two angles, are respectively equal to two angles of another triangle and the side contained between them, then the two triangles will be congruent”.

Do all triangles equal 180?

The angle sum of a triangle will always be equal to 180°. The angle sum of a quadrilateral is equal to 360°, and a triangle can be created by slicing a quadrilateral in half from corner to corner. Since a triangle is essentially half of a quadrilateral, its angle measures should be half as well. Half of 360° is 180°.

### What is the measure of one angle in a right triangle?

One angle in a right triangle measures 57°. What is the measure of the other acute triangle? – Brainly.com One angle in a right triangle measures 57°. What is the measure of the other acute triangle?

### How many degrees are there in a right triangle?

In our right triangle, one angle is 25 degree and we’ll call that angle A. The other known angle is 90 degrees and we’ll call this angle B. Thus, we have

What is the measure of each of the two equal angles?

The internal angles of a triangle always add up to 180 degrees, and it was given that the triangle was right, meaning that one of the angles measures 90 degrees. This leaves 90 degrees to split evenly between the two remaining angles as was shown in the question. Therefore, each of the two equal angles has a measure of 45 degrees.

## How do you find the interior angles of a right triangle?

The interior angles of a triangle always add up to 180 degrees. We are given angle and since this is indicated to be a right triangle we know angle is equal to 90 degrees. Thus we know 2 of the 3 and can determine the third angle. Angle is equal to 55 degrees.