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# 09 21-11 wk 4-3 triangle basics

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### Transcript

• 1. 9/21/11Wednesday<br />EQ: How do I identify and describe polygons?<br />I can classify triangles based on sides and angles. <br />9/17/2011<br />1<br />Bitsy Griffin 4-3 Objective 3<br />
• 2. Quick Review:<br />Polygon prefixes<br />9/17/2011<br />2<br />Bitsy Griffin 4-3 Objective 3<br />
• 3. Angles:<br />Two rays or line segments come together and form an<br />Angle!<br />9/17/2011<br />3<br />Bitsy Griffin 4-3 Objective 3<br />
• 4. Angles:<br />Right<br />Exactly 90o<br />9/17/2011<br />4<br />Bitsy Griffin 4-3 Objective 3<br />
• 5. Angles:<br />Obtuse<br />Greater than 90o<br />9/17/2011<br />5<br />Bitsy Griffin 4-3 Objective 3<br />
• 6. Angles:<br />Acute<br />Less than 90o<br />9/17/2011<br />6<br />Bitsy Griffin 4-3 Objective 3<br />
• 7. Angles:<br />Straight<br />Exactly 180o<br />9/17/2011<br />7<br />Bitsy Griffin 4-3 Objective 3<br />
• 8. Scalene<br />No sides the same<br />No angles the same.<br />9/17/2011<br />8<br />Bitsy Griffin 4-3 Objective 3<br />
• 9. Scalene<br />9/17/2011<br />9<br />Bitsy Griffin 4-3 Objective 3<br />
• 10. Isosceles:<br />2 sides the same<br />2 angles the same.<br />9/17/2011<br />10<br />Bitsy Griffin 4-3 Objective 3<br />
• 11. Isosceles:<br />9/17/2011<br />11<br />Bitsy Griffin 4-3 Objective 3<br />
• 12. Equilateral:<br />3 sides the same<br />3 angles the same.<br />9/17/2011<br />12<br />Bitsy Griffin 4-3 Objective 3<br />
• 13. Triangle angles<br />A triangle’s angles always add up to 180o<br />9/17/2011<br />13<br />Bitsy Griffin 4-3 Objective 3<br />
• 14. Equilateral:<br />9/17/2011<br />14<br />Bitsy Griffin 4-3 Objective 3<br />
• 15. EQ: How do I identify and describe polygons?<br />I can classify triangles based on sides and angles. <br />9/17/2011<br />15<br />Bitsy Griffin 4-3 Objective 3<br />
• 16. Assessment<br />Identify angle types<br />Identify triangle types<br />9/17/2011<br />16<br />Bitsy Griffin 4-3 Objective 3<br />