1. Triangle and Quadrilateral Review

2. Acute Triangle An acute triangle has three acute angles.

3. Right Triangle A right triangle has one right angle.

4. Obtuse Triangle An obtuse triangle has one obtuse angle.

5. Equilateral Triangle An equilateral triangle has three sides of the same length.

6. Isosceles Triangle An isosceles triangle has at least two sides of the same length.

7. Scalene Triangle A scalene triangle has no sides the same length.

8. Classify Triangles Using Sides Scalene Triangle This triangle has NO congruent sides. 3 5 7

9. Isosceles Triangle This triangle has 2 congruent sides. This symbol represents that the sides are congruent. 8 8 6

10. Classify Triangles Using Sides Equilateral Triangle This triangle has 3 congruent sides. 4 4 4

11. Name the Triangle by the Angle Acute

12. Right

13. Acute

14. Name the triangle by the Angle Right

15. obtuse

16. Classify triangles by sides and angles a) b) c) 7 24 25 70° 40° 120°45° 15° a)Scalene, Right b)Isosceles, Acute c)Scalene, Obtuse

17. Classify triangles by sides and angles a) b) c) 5 55 110° 3 4 5 a)Acute Equilateral b)Right scalene c)Obtuse Isosceles

18. Quadrilaterals

19. Name This Quadrilateral Square

20. Name This Quadrilateral Trapezoid

21. Name: Number of Sides: Types of Angles: Types of Sides: Tell Me About This Quadrilateral Rectangle 4 Right Parallel and Perpendicular

22. Name: Number of Sides: Types of Angles: Types of Sides: Tell Me About This Quadrilateral Parallelogram 4 2 Acute, 2 Obtuse Parallel