Angles

Learning about angles (what are angles, how to calculate what angles we have).

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Angles

Zero angle

Name the angles correctly

Choose the correct answer:

The measure of the concave angle is ...

A - shoulder of a given angle

B - shoulder of a given angle

O - vertex of the given angle

Each vertex has two arms.

Acute angle

greater than 90 degrees but less than 180 degrees

We distinguish the angles:

zero - the angle measure is 0 degrees,

sharp - the angle measure is greater than 0 degrees but less than 90 degrees,

straight - the measure of the angle is 90 degrees,

obtuse - the angle measure is greater than 90 degrees but less than 180 degrees,

semi-full - the angle is 180 degrees,

concave - the angle measure is greater than 180 degrees but less than 360 degrees,

full - the measure of the angle is 360 degrees.

greater than 180 degrees but less than 360 degrees

Right angle

The acute angle measure is ...

more than 0 degrees but less than 90 degrees

Obtuse angle

90 degrees

Half angle

Concave angle

Full angle