ANGLESANGLES. You will learn to classify angles MG 3.5 Know the definitions of a right angle, an acute angle, and an obtuse angle.

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Presentation transcript:

ANGLESANGLES

You will learn to classify angles MG 3.5 Know the definitions of a right angle, an acute angle, and an obtuse angle

In partnerships, identify the following angles AcuteobtuseRight A.B.C. In partnerships, identify the following angles

What is an angle? Two rays that share the same endpoint form an angle. The point where the rays intersect is called the vertex of the angle. The two rays are called the sides of the angle.

Angle Measurements An angle are two rays that meet at the same endpoint. We measure the size of an angle using degrees. Here are some examples of angles and their degree measurements.

We can identify an angle by using a point on each ray and the vertex. The angle below may be identified as angle ABC or as angle CBA; you may also see this written as ABC or as CBA. The vertex point is always in the middle.

Right Angles A right angle is an angle measuring 90 degrees. The following angles are both right angles.

Acute Angles An acute angle is an angle measuring between 0 and 90 degrees. The following angles are all acute angles.

Obtuse Angles An obtuse angle is an angle measuring between 90 and 180 degrees. The following angles are all obtuse.

Straight Angle A straight angle is 180 degrees.

GAME TIME! The object of the game is to be the first to raise your hand and correctly name what type of angle you see. The correct answer will be on the following slide!! Good luck!

Acute Angle

Obtuse Angle

Right Angle

Straight Angle

GREAT JOB!!