Name: ______________________________ 1ST SEMESTER EXAM PRACTICE TEST (show work CLEARLY labeled by number on separate paper and staple to practice test) 1. Points C, D, and E are collinear. D is between C and E. πΆπΈ = 6π₯, πΆπ· = 4π₯ + 8 and π·πΈ = 27. Find CE. A. CE = 17.5 B. CE = 78 C. CE = 105 D. CE = 57 2. πΎ is the midpoint of π½πΏ. π½πΎ = 6π₯ and πΎπΏ = 3π₯ + 3. Find π½πΏ. 3. ββββββ π΅π· bisects ∠π΄π΅πΆ. If π∠π΄π΅π· = (7π₯ − 1)° and π∠π·π΅πΆ = (4π₯ + 8)°. Find π∠π΄π΅π·. A. π∠π΄π΅π· = 22° B. π∠π΄π΅π· = 3° C. π∠π΄π΅π· = 40° D. π∠π΄π΅π· = 20° 4. Find the coordinates of the midpoint of πΆπ with endpoints C(1, -6) and M(7, 5). 1 A. (4,- ) B. C. (8, -1) (3, -1) 2 1 1 2 2 D. (4 , ) 5. Find the length of π΄π΅ with endpoints A(-7, 4) and B(3, 8). Round your answer to the nearest hundredth. 6. If the coordinates of A are (1,1) and the midpoint of π΄π΅ is (-2, 0), then the coordinates of B are _____? A. (-0.5, 0.5) B. (0.5, 0.5) C. (-1, 0) D. (-5, -1) 7. Which of the following counterexamples shows that the conjecture is false? x2 ≥ x A. B. C. D. x = 0.5 x = -5 x=0 There is not a counterexample because the statement is true. 8. A true conditional statement is given below. Given: If two angles form a linear pair, then they are supplementary Which of the following represents the inverse and describes the truth value? A. If two angles do not form a linear pair, then they are not supplementary. – True B. If two angles do not form a linear pair, then they are not supplementary. – False C. If two angles are supplementary, then they form a linear pair. – True D. If two angles are supplementary, then they form a linear pair. – False 9. Which is the best description of the lines 12x+3y=3 and y=4x+1? F. The lines intersect. G. The lines are coinciding. H. The lines are parallel. J. The lines are perpendicular. 10. Which value for x satisfies the conditions that prove π β₯ π? 11. Which of the following is the equation of the line that passes through point P and is perpendicular to the line of the given equation? 1 Given: P(3, 2), π¦ = π₯ + 1 14. Which of the side lengths below form an obtuse triangle? A. 4, 7, 8 B. 12, 14, 15 C. 9, 12, 16 D. 6, 8, 10 15. There are three square lots that are adjacent to a lake in the shape of a right triangle. The area of the largest lot is 28,900 ft2. The length of the smallest lot is 80 ft. The owner of the middle sized lot wants to put a fence around his property that will keep his cattle in, but still let them drink water from the lake. 4 1 A. π¦ = − π₯ + 1 4 B. π¦ = −4π₯ + 1 C. π¦ = 4π₯ + 9 D. π¦ = −4π₯ + 9 12. What is the value of x in the figure below? How many feet of fencing does he need to buy? A. 600 ft. B. 28,900 ft. C. 450 ft. D. 150 ft. 13. Which is the length of Μ Μ Μ Μ ππ? 16. Given: βABC with π∠π΄ = (7π₯)°, π∠π΅ = (8π₯ − 7)°, and π∠πΆ = (2π₯)° What is the measure of angle A? 17. Given the triangle below, what is the value of x? A. B. C. D. 78.1 36.4 70.8 38.6 in. in. in. in. 18. Which of the following triangle congruence postulate could be used to prove ΔQRS ≅ ΔQRT? A. AAS B. SSS C. ASA D. SAS Use the figure below to answer #23. 19. Triangle JKL is similar to triangle JMN. What is 23. Name the following. 3 1 5 the area of triangle JMN? The following picture is to be used to answer questions #27-29 2 4 7 8 6 Alternate exterior angles Alternate interior angles – Corresponding angles – Same side interior angles – Vertical angles – 24. What is the slope of the line through (-3, 8) and (5, 0)? 25. What is the slope of the line through (4, -1) and (5, -2)? 26. Find the value of the “?” 20. Which of the following is the value of x? A. 37 B. 32 C. 14 D. 2 27. 21. Which of the following is the value of y? A. 54 B. 90 C. 27 D. 117 22. What is the best classification for the triangle? A. Equilateral B. Right Isosceles C. Obtuse Isosceles D. Acute Isosceles 28. Find m<CBY. 29. Find m <STU 30. Complete the following patterns. 1, 3, 5, 7, ____, _____ 1, 2, 4, 7, 11, ____, _____ , , ,… Use the following diagram for #31-33 31. Find the measure of <ZWY. 32. Find the supplement of <VWX. 33. Find the complement of <VWZ. Solve for the variable. 34. 35.