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ANGLE. A FIGURE FORMED BY TWO NONCOLLINEAR RAYS WITH A COMMON ENDPOINT. ANGLE. The TWO NONCOLLINEAR RAYS ( ray BP & ray BC ) are the SIDES of an angle. ANGLE. The point where the rays intersect is called the VERTEX of an angle. ANGLE MNEMONIC. S - Sides are 2 non-collinear rays .

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## ANGLE

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**ANGLE**• A FIGURE FORMED BY TWO NONCOLLINEAR RAYS WITH A COMMON ENDPOINT.**ANGLE**• The TWO NONCOLLINEAR RAYS (ray BP & ray BC) are the SIDES of an angle.**ANGLE**• The point where the rays intersect is called the VERTEX of an angle.**ANGLE MNEMONIC**• S- Sides are 2 non-collinear rays. • E- Endpoint is also called vertex. • R- Rays are the 2 sides. • V- Vertex is the common endpoint.**AN ANGLE SEPARATES A PLANE INTO 3 PARTS**• INTERIOR ANGLE- point D • EXTERIOR ANGLE – point H • THE ANGLE ITSELF P, A, W,C ●H ●D**An angle is named by:**• USING • 3 POINTS. • EXAMPLE: • ABC orCBA • PBW or WBP**An angle is named by:**2. BY THE VERTEX ALONE. EXAMPLE: B**An angle is named by:**3. BY USING A NUMERAL. EXAMPLE: 1 1 1**EXERCISES**3 2 1**NAME THE ANGLES USING A NUMERAL**NAME THE ANGLES USING 3 POINTS 3 2 1**WHAT ARE THE SIDES OF ANGLE 3.**ANOTHER NAME OF ANGLE 1. B or ABWPBC or ABC Segment AC and ray AP 3 2 1**WHAT IS THE COMMON SIDE OF 2 AND 3?**Segment AC 3 2 1**Name the three angles in the diagram.**WXY, or YXW YXZ, or ZXY WXZ, or ZXW EXAMPLE 5 Name angles You should not name any of these angles X because all three angles have Xas their vertex.**Degrees: Measuring AnglesAngles are measured in units called**DEGREES and classified according to their measures.**Degrees: Measuring AnglesWe measure the size of an angle**using a device called the PROTRACTOR.**Use a protractor for exercises 1-2**Construct an angle with a measure of 45 degrees. Construct an angle with measure of 125 degrees.**QUIZ**• 1. NAME THE ANGLES USING 3 POINTS. • 2. WHAT ARE THE SIDES OF PAR? • 3. WHAT IS THE VERTEX OF DAR? D P R A**HOMEWORK**• WHAT IS A POLYGON? • WHAT ARE THE TYPES OF POLYGON?

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