Is a 140 degree angle acute?

Is a 140 degree angle acute?

In geometry, there are three types of angles: acute angle-an angle between 0 and 90 degrees. obtuse angle-an angle between 90 and 180 degrees.

What type of angle is 144 degrees?

And there are ten angles… So, the measure of the angle of a regular decagon is 144 degrees. To find the measure of the central angle of a regular decagon, make a circle in the middle…

What angle is 140 degrees called?

An obtuse angle is a type of angle whose degree measurement is more than 90° but less than 180°. Examples of obtuse angles are: 100°, 120°, 140°, 160°, 170°, etc. ∠ PQR is an obtuse angle because it’s less than 180° and greater than 90°.

What is the supplement of a 143 degree angle?

143 degrees + b=180 degrees Subtract 143 degrees from each side. 37 degrees + c =90 degrees Subtract 37 degrees from each side. c=53 degrees ANSWER: The measure of angle c is 53 degrees.

What type of angle is 150 degrees?

Examples of Obtuse Angles We know that angles measuring greater than 90° and less than 180° are called obtuse angles. Therefore, angles that measure 145°,150°,178°,149°, 91° are considered as obtuse angle examples.

How are polygons named?

Individual polygons are named (and sometimes classified) according to the number of sides, combining a Greek-derived numerical prefix with the suffix -gon, e.g. pentagon, dodecagon. Some special polygons also have their own names; for example the regular star pentagon is also known as the pentagram.

How many angles does a nonagon have?

9 angles
A nonagon consists of 9 angles. The sum of angles of a nonagon is 1260°.

How do you construct a 140 degree angle?

Answer

1. Draw 120° angle & bisect it with 180°.
2. Then draw an arc from 120° on the right side and also from the one you just made ( in 1 ).
3. draw an arc from 1) & 2) in between them but above.
4. Join O to 3)
5. Measure and Mark it as 140°

What is an example of an obtuse angle?

What is in obtuse angle?

Obtuse angle is any angle greater than 90°: Straight angle is an angle measured equal to 180°: Zero angle is an angle measured equal to 0°: Complementary angles are angles whose measures have a sum equal to 90°: Supplementary angles are angles whose measures have a sum equal to 180°.

What is a complementary angle in geometry?

Complementary angles are two angles whose measures add up to 90° . In the figure below, ∠1 and ∠2 are complementary. Two angles need not be adjacent to be complementary. The angles in the next figure are also complementary, since 35°+55°=90° .