Question

angle names and duty​

Answer 1

Answer:

angles name:

-acute angle-below 90°

-right angle-exactly of 90°

-obtuse angle-above 90° and below 180°

-straight angle-exactly of 180°

-reflex angle-above 180° and below 360°

-complete angle-exactly of 360°

Answer 2

Explanation:

• Zero Angles. - An angle that measures as zero degrees (0°) is called a zero angle or zero radian. The condition of zero angle, the two lines or two rays are in the same direction with a common point called vertex. ... Hence, the angle measure between the two rays is zero.

• Acute Angles. -Acute angles measure less than 90 degrees. Right angles measure 90 degrees. Obtuse angles measure more than 90 degrees.

• Right Angles. - In geometry and trigonometry, a right angle is an angle of exactly 90° (degrees), corresponding to a quarter turn. If a ray is placed so that its endpoint is on a line and the adjacent angles are equal, then they are right angles.

• Obtuse Angles. - In Geometry, an obtuse angle is an angle that is greater than 90° and less than 180°

• Straight Angles. - In Maths, a straight angle is an angle equal to 180 degrees. It is called straight because it appears as a straight line. Basically, as per angles definition in maths, when two rays are joined end to end, they form an angle.

• Reflex Angle. - A reflex angle is any angle that is more than 180 degrees (half circle) and less than 360 degrees (full circle). A reflex angle will always have either an obtuse or an acute angle on the other side of it.

• Complete Angle - A full angle, also called a complete angle, round angle, or perigon, is an angle equal to radians. corresponding to the central angle of an entire circle. Four right angles or two straight angles equal one full angle.

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