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Name ________________________________________ Date __________________ Class __________________ 5.3 HW - Triangles Identify each triangle by its angles and sides. 1. 2. 3. ________________________ _______________________ ________________________ ________________________ ________________________ ________________________ Find each angle measure. 4. Find x° in the acute triangle. ________________________ 7. Find t° in the isoceles triangle. ________________________ 5. Find y° in the right triangle. _______________________ 8. Find x° in the scalene triangle. _______________________ 6. Find r° in the obtuse triangle. ________________________ 9. Find n° in the isosceles triangle. ________________________ Name ________________________________________ Date __________________ Class __________________ 10. The second angle in a triangle is three times as large as the first. The third angle is one-third as large as the second angle. Find the angle measures. Draw a possible picture of the triangle. _________________________________________________________________________________________ Tell whether a triangle can have sides with the given lengths. Explain. 11. 6 ft, 8 ft, 13 ft ________________________ 12. 15 cm, 8 cm, 2 cm _______________________ 13. 9 mm, 22 mm, 14 mm ________________________ Describe each statement as always, sometimes, or never true. 148. An obtuse triangle is a scalene triangle. _________________________________________________________________________________________ 15. A scalene triangle is an isosceles triangle. _________________________________________________________________________________________ 16. A right triangle is an isosceles triangle. _________________________________________________________________________________________ 17. A triangle with all angles congruent is acute. _________________________________________________________________________________________ Name ________________________________________ Date __________________ Class __________________ Sketch a triangle to fit each description. If no triangle can be drawn, write not possible. 18. obtuse, isosceles 19. right, scalene 20. acute, equilateral
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