What is the measure of its exterior angle?

360°/n
The exterior angle is the angle formed outside a polygon between one side and an extended side. The measure of each exterior angle of a regular polygon is given by; The measure of each exterior angle =360°/n, where n = number of sides of a polygon.

What is the measure of the exterior angle of a 20gon?

18°
The measure of each exterior angle of a regular 20-gon is 18°. Measure of one if the polygon is REGULAR!

What is the measure of an exterior angle in a regular quadrilateral?

90o
Each exterior angle of a regular quadrilateral (a square) is 90o .

What is the value of a exterior angle theorem?

Let us recall a few common properties about the angles of a triangle: A triangle has 3 internal angles which always sum up to 180 degrees. It has 6 exterior angles and this theorem gets applied to each of the exterior angles.

What is the measure of an exterior angle of a 12 sided polygon?

30˚
Explanation: For a regular n -gon, the measure of an exterior angle is 360˚n . Since a dodecagon has 12 sides, an exterior angles is 360˚12=30˚ .

What is the measure of an exterior angle in a regular Heptagon?

51.43∘
51.43∘ is the measure of each exterior angle in a regular heptagon.

What is the angle measure of a quadrilateral?

360 degrees
So, the sum of the interior angles of a quadrilateral is 360 degrees. All sides are the same length (congruent) and all interior angles are the same size (congruent). To find the measure of the interior angles, we know that the sum of all the angles is 360 degrees (from above)… And there are four angles…

What is the measure of each angle of a regular quadrilateral?

The measure of each angle of regular quadrilateral is 90°. All sides are equal .

What is exterior angle property class 7?

An exterior angle of a triangle is equal to the sum of the opposite interior angles. In the above figure, ∠ACD is the exterior angle of the Δ ABC.

What is a 12 sided figure?

dodecagon
A dodecagon is a 12-sided polygon. Several special types of dodecagons are illustrated above. In particular, a dodecagon with vertices equally spaced around a circle and with all sides the same length is a regular polygon known as a regular dodecagon.

What is the sum of the exterior angles of a dodecagon 12 sides?

Triangles in a Dodecagon

How do you find the greatest measure of an exterior angle?

By the Triangle Exterior-Angle Theorem, an exterior angle of a triangle measures the sum of its remote interior angles; therefore, to get the greatest measure of any exterior angle, we add the two greatest interior angle measures: Q.3 Two angles are supplementary and have a ratio of 1:4.

What is Lev and why is it important?

You have a legal responsibility to ensure that employee exposure to dust/fumes etc. is minimised and well controlled. LEV is an excellent way of doing this. People who supply, examine and maintain LEV need to be competent otherwise your LEV may not work properly, putting people’s health at risk.

Can I measure the speed of air entering an Lev Hood?

It is not possible to gauge effectively the speed (velocity) of the air entering an LEV hood ‘by hand’. A suitable airflow indicator should make it easy to see whether airflow is adequate. Do I have to fit airflow indicators now?

How do you find the measure of an interior angle?

To find the measure of one interior angle, we take that formula and divide by the number of sides n: ( n – 2) * 180 / n. The exterior angle is supplementary to the interior angle, so to find the exterior angle, we simply subtract the interior angle from 180: 180 – interior angle.