3rd geometry unit 2_angles_presentation

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UNIT 2
ANGLES
by Maria Adrover
CEIP S'ALGAR. PORTOCOLOM
Geometry 3rd_Unit 2_Angles

DEFINITION
When two straight angles meet they form four angles

PARTS OF AN ANGLE
 An angle has got a vertex and two arms

RIGHT ANGLES
 When two perpendicular lines meet form four right angles
 A right angle is 90º

ACUTE AND OBTUSE ANGLES
 Smaller angles than 90º are called acute.
 Bigger angles than 90º are called obtuse.

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3rd geometry unit 2_angles_presentation

1. UNIT 2 ANGLES by Maria Adrover CEIP S'ALGAR. PORTOCOLOM Geometry 3rd_Unit 2_Angles

2. DEFINITION When two straight angles meet they form four angles

3. PARTS OF AN ANGLE  An angle has got a vertex and two arms

4. RIGHT ANGLES  When two perpendicular lines meet form four right angles  A right angle is 90º

5. ACUTE AND OBTUSE ANGLES  Smaller angles than 90º are called acute.  Bigger angles than 90º are called obtuse.

6. Using the SET SQUARE

7. Using the SET SQUARE