# Which is an angle whose measure is exactly 180?

## Which is an angle whose measure is exactly 180?

straight angle
Def: A straight angle is an angle whose measure is exactly 180 degrees.

### What is the measure of 180 degrees?

The angle which measures 180 degrees is named the straight angle. The other angles are given here: Acute angle: The angle which is more than 0° and less than 90°…Table of Angles.

Type of angle Measure of angle
Reflex angle 180° < θ < 360°
Full rotation (or Complete angle) θ = 360°

#### What is the name of 180?

straight angle-a 180 degree angle.

What is an angle greater than 180 called?

Reflex Angle. The angle which measures greater than 180° and less than 360° is known as the reflex angle. The reflex angle can be calculated if the measure of the acute angle is given, as it is complementary to the acute angle on the other side of the line.

What is meant by 180 degree angle?

A 180-degree angle is a straight angle and it is exactly half of a revolution. It is also called a half-circle angle. A straight angle is produced by a straight line. The two arms of the angle which are making 180-degree are just opposite to each other from the common vertex.

## What is 180-degree longitude called?

The Earth’s longitude measures 360, so the halfway point from the prime meridian is the 180 longitude line. The meridian at 180 longitude is commonly known as the International Date Line. As you pass the International Date Line, you either add a day (going west) or subtract a day (going east.) Hemispheres.

### Can an angle be more than 180?

Obtuse Angle – An angle more than 90 degrees and less than 180 degrees. Straight Angle – An angle that is exactly 180 degrees. Reflex Angle – An angle greater than 180 degrees and less than 360 degrees.

#### Why do triangle angles add to 180?

A triangle’s angles add up to 180 degrees because one exterior angle is equal to the sum of the other two angles in the triangle. In other words, the other two angles in the triangle (the ones that add up to form the exterior angle) must combine with the third angle to make a 180 angle.

How do you prove 1 degree is 60 minutes?

How Is 1 Degree Equal To 60 Minutes?

1. Answer: One degree is split into 60 minutes of arc and one minute split into 60 seconds of arc. The use of degrees-minutes-seconds is also recognized as DMS notation.
2. To Prove. 1 degree = 60 minutes.
3. Proof. We know that. 1 minute = 60 seconds. 1 day =24 h0urs.

What does a 180 angle look like?

90 degrees is what an angle in a square looks like, and 180 degrees is a straight line. 220 degrees is 40 degrees past that, so it looks like about 5/8ths of a circle, or just a little bit larger than a straight line.

## How do you find the degree of an angle?

Solve the angle of an incline by finding the rise and the run of a line. Convert rise and run to the same units of measure, then divide the rise by the run to find the decimal form. Finally, get the inverse tangent of the decimal to find the angle in degrees. degrees = tan -1(decimal).

### What angle is 180 degrees?

An angle that is exactly 180 degrees is called a straight angle. Furthermore, what does a 180 degree angle look like? It is equal to one-quarter of a rotation around a circle. A straight line creates a 180 degree angle. It is equal to one-half a rotation around a circle. Consequently, what is a 181 degree angle called?