1. Which of the following statements is true? A. A scalene triangle has three congruent sides. B. A scalene triangle has exactly two congruent sides. Special triangles C. An equilateral triangle has exactly two Question # 26 congruent sides. 4.1.1 Identify the attributes of D. An equilateral triangle is also an Isosceles special triangles (isosceles, triangle. equilateral, right) Test index worksheets Test index worksheets Last Return to Last slide test slide To do problems like these, you need to look at all the 2. Which of the following statements is true? answers, and know the definition of each type of special triangle listed, then select the correct one. A. A scalene triangle has two congruent sides. Scalene triangle – has no congruent sides. B. All angles in a scalene triangle are different. Isosceles triangle – at least 2 congruent sides. C. An equilateral triangle has exactly two congruent sides. Equilateral triangle – has 3 congruent sides. Also an equilateral triangle is also a equiangular triangle. D. An isosceles triangle is also an equilateral triangle. Right triangle – one angle is 90°. Acute triangle – all angles are less than 90°. Obtuse triangle – one angle is greater than 90°. Test index worksheets Test index worksheets Last Return to Last slide test slide Example: Which of the following statements is true? 3. Which of the following statements is true? A. A scalene triangle has no congruent sides. A. A scalene triangle has three congruent sides. True – a scalene triangle has no congruent sides. B. A scalene triangle has exactly two congruent B. A scalene triangle has exactly two congruent sides. False- a scalene triangle has no congruent sides sides. C. An equilateral triangle has exactly two C. All sides of an equilateral triangle are congruent sides. False it has exactly 3 congruent. D. An isosceles triangle is also an equilateral D. An isosceles triangle is also an equilateral triangle. False – an isosceles may only have 2 congruent sides, and triangle. equilateral triangle has to have 3 Test index worksheets Test index worksheets Last Return to Last slide test slide 1 4. Which of the following statements is not true. 7. Which of the following is not true? A. The longest side of a right triangle is opposite A. None of the sides of a scalene triangle are the 90° angle. congruent. B. The sum of the lengths of the two legs of a B. None of the angles of a scalene triangle are right triangle is always greater than the congruent. hypotenuse. C. The sum of the angles of an obtuse scalene C. It is possible to have an acute right triangle. triangle will always be greater than the sum of the angles in an acute triangle. D. It is possible to have an obtuse right triangle. D. A scalene triangle can be acute or obtuse. Test index worksheets Test index worksheets Last Last slide slide 5. Which of the following statements is not 8. Which of the following statements is true? true? A. A equilateral triangle has no congruent sides. A. An equilateral triangle is also an isosceles B. An isosceles triangle has at least two triangle. congruent sides. B. An isosceles triangle is also an equilateral C. An equilateral triangle has exactly two triangle. congruent sides. C. An isosceles triangle has at least two D. An isosceles triangle is also an equilateral congruent sides. triangle. D. An isosceles triangle has at least two congruent angles. Test index worksheets Test index worksheets Last Last slide slide 6. Which of the following is not true? 9. Which of the following statements is true? A. An equilateral triangle has exactly two A. A scalene triangle has three congruent sides. congruent sides. B. A scalene triangle has exactly two congruent B. An equilateral triangle has two congruent sides. sides. C. An equilateral triangle has exactly three C. An equilateral triangle has three congruent congruent sides. sides. D. A scalene triangle is also an Isosceles D. An equilateral triangle has three congruent triangle. angles. Test index worksheets Test index worksheets Last Last slide slide 2 10. Which of the following statements is true? 13. Which of the following statements is not true? A. A scalene triangle has no congruent sides. A. An equilateral triangle is also a isosceles B. All angles in a scalene triangle are the same. triangle. C. An equilateral triangle has exactly two B. An equilateral triangle is also an equiangular congruent sides. triangle. D. An isosceles triangle is also an scalene C. An isosceles triangle has at least two triangle. congruent sides. D. An isosceles triangle has three congruent angles. Test index worksheets Test index worksheets Last Last slide slide 11. Which of the following statements is true? 14. Which of the following is not true? A. A scalene triangle has three congruent sides. A. An equilateral triangle has exactly two congruent sides. B. A scalene triangle has no sides congruent. B. An equilateral triangle has two congruent C. All sides of an equilateral triangle are sides. different. C. An equilateral triangle has three congruent D. An isosceles triangle is also an equilateral sides. triangle. D. An equilateral triangle has three congruent angles. Test index worksheets Test index worksheets Last Last slide slide 12. Which of the following statements is not true. 15. Which of the following is not true? A. The longest side of a right triangle is opposite A. None of the sides of a scalene triangle are the 90° angle. congruent. B. The sum of the lengths of the two legs of a B. All of the angles of a scalene triangle are right triangle is always smaller than the congruent. hypotenuse. C. The sum of the angles of an obtuse scalene C. It is possible to have an acute right triangle. triangle will always be the same as the sum of the angles in an acute triangle. D. It is possible to have an isosceles right triangle. D. A scalene triangle can be acute or obtuse. Test index worksheets Test index worksheets Last Last slide slide 3 16. Which of the following is not true? 19. Which of the following statements is true? A. The sum of the angles of an acute triangle will A. A scalene triangle has three congruent sides. always be smaller than the sum of the angles of an obtuse triangle. B. A scalene triangle has exactly two congruent B. The sum of the angles of a right triangle will be sides. greater than the sum of the angles of an acute triangle. C. An equilateral triangle has exactly two C. The sum of the angles of a right triangle is always congruent sides. smaller than the sum of the angles of an acute triangle. D. An equilateral triangle is also a isosceles D. All three A, B, and C triangle. Test index worksheets Test index worksheets Last Last slide slide 17. Which of the following statements is not true? Question # 26 answers A. No sides of a scalene triangle are congruent. Special triangles B. A scalene triangle has exactly two congruent 1. D 2. B 3. C 4. D sides. 5. B 6. A 7. C 8. B C. An equilateral triangle has three congruent 9. C 10. A 11. B 12. B sides. 13. D 14. A 15. B 16. D D. An equilateral triangle is also an Isosceles 17. B 18. D 19. D triangle. Test index worksheets Test index worksheets Last Last slide slide 18. Which of the following statements is not true? A. An isosceles triangle has two congruent sides. B. All angles in a scalene triangle are different. C. An equilateral triangle has exactly three congruent sides. D. An isosceles triangle is also an equilateral triangle. Test index worksheets Last slide 4.