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It is: 180-vertex angle = exterior angle

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Q: What is the measure of an exterior angle adjacent to the vertex angle?
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The measure of an exterior angle at the vertex of a polygon equals the measure of the adjacent interior angle?

Very rarely.


Is the measure of an exterior angle at the vertex of a polygon equals the measure of the adjacent interior angle?

No. The interior angle and exterior angle at the same vertex are supplementary. Each of them is (180 degrees minus the other). In rectangles (including squares), the interior and exterior angles at each vertex are both right angles.


Does the measure of an exterior angle at the vertex of a polygon equal the measure of the adjacent interior angle?

The sum of an adjacent interior and its exterior angle will total to 360°. If the angles were to be equal, they would both have to be 180°. An angle of 180° is a straight line. A polygon may be composed of straight lines that intersect at vertices but a straight line has no vertex. That being the case, the answer to your question is "No".


Exterior angle of a triangle?

Exterior Angle Theorem Exterior angle of a triangle An exterior angle of a triangle is the angle formed by a side of the triangle and the extension of an adjacent side. In other words, it is the angle that is formed when you extend one of the sides of the triangle to create a new line, and then measure the angle between that new line and the adjacent side of the original triangle. Each triangle has three exterior angles, one at each vertex of the triangle. The measure of each exterior angle is equal to the sum of the measures of the two interior angles that are not adjacent to it. This is known as the Exterior Angle Theorem. For example, in the triangle below, the exterior angle at vertex C is equal to the sum of the measures of angles A and B So, angle ACB (the exterior angle at vertex C) is equal to the sum of angles A and B. Recomended for you: 𝕨𝕨𝕨.𝕕𝕚𝕘𝕚𝕤𝕥𝕠𝕣𝕖𝟚𝟜.𝕔𝕠𝕞/𝕣𝕖𝕕𝕚𝕣/𝟛𝟚𝟝𝟞𝟝𝟠/ℂ𝕠𝕝𝕝𝕖𝕟ℂ𝕠𝕒𝕝/


The exterior angle of a base angle in an isosceles triangle is 100 degrees What is the measure of the vertex angle?

20 degrees


An exterior angle at the base of an isosceles triangle measures 110 find the measure of the vertex angle?

40


What is the measure of each exterior angle one angle at each vertex of a regular hexagon?

60 degrees.


If a non regular hextagon has five exteriorangle measures of 55 60 69 57 and 57 what is the measure of the interior angle adjacent to the sixth exterior angle?

Five of the six exterior angle measures of a nonregular hexagon measure 55, 60, 69, 57, and 57. what is the measure of the unterior angle adjacent to the sixth exterior angles?


What is an angle formed by one side of the triangle and the extension of an adjacent angle?

Exterior and interior angles at the vertex of a triangle add up to 180 degrees


An exterior angle at the base of an isosceles triangle measures 130 find the measure of the vertex angle?

80 degrees.


Is it true or false the measure of an exterior angle and the adjacent interior angle sum to 180 degress?

True


How do you use the exterior angles of a triangle to find interior angle measurements?

Theorem: An measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles.An exterior angle is formed by one side of a triangle and the extension of an adjacent side of the triangle.In the triangle at the right,