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Geometry – Unit 4 Pretest: Triangles Matching: A. One angle measuring 90o B. All angles are less than 90o C. All sides are congruent D. One angle measuring greater than 90o E. No sides in the triangle are congruent F. All angles are congruent G. Two sides of the triangle are congruent 1. _____ Equilateral 2. _____ Isosceles 3. _____ Scalene 4. _____ Right 5. _____ Acute 6. _____ Equiangular 7. _____ Obtuse For the next part, find the missing variable(s). 8) xo yo Xo ________ Yo ________ 9) Xo ________ Yo ________ yo 60o xo 10) X ________ 30o Geometry – Unit 4 Pretest: Triangles 11. List any information that you know about a midsegment. Fill in the blank. 12. If a point is on the bisector of an angle, then the point is _________________ from the sides of the angle. 13. If a point is equidistant from the endpoints of a segment, then it is on the _________________________ of the segment. For the next part, find the missing variable. x+5 14. ______ 15.______ 3 3x - 7 2x + 4 T 16. In the figure to the right. E, D and H are the midpoints of TUV . UV = 80, TV = 100, and HD = 80 H E List all parallel segments ____________________ Find the following values. V HE___________ ED___________ TU___________ TE ___________ D U Geometry – Unit 4 Pretest: Triangles D 17.________ If BE = 2x + 6 and DF = 5x + 9, find DF 18. ________ If EC = 3x – 1 and AD = 5x + 7, Find EC. B C A F E 19. ____________ Julia is designing a kite like the one on the right. The diagonals measure 48 cm and 80 cm. For stability, she will use ribbon to connect the midpoints of each side. How much ribbon will she need? C 20. For the picture to the right, find the value of the following. CD is the perpendicular bisector of ST and XY. CT _______ TY _______ SX _______ CX _______ MT _______ ST ________ DY _______ 24 32 S 10 X 14 T M Y D XY _______ A 21. Find the following X + 50 mABC _________ mA ___________ BC _____________ AC _____________ B F X + 85 140o 70o E 3X + 46 BE || AD C D Geometry – Unit 4 Pretest: Triangles Find X in the following 23. 22. Xo 42o 90o 62o Xo 142o 24. Can the following triangles have the given lengths? 4 in. 7 in. 11 in. 3cm 5cm 7cm 25. In a triangle with the given lengths, explain the range for the third side. 9 feet, 11 feet 26. The base of a triangle is 6cm. One of the remaining sides is twice the measure of the other. What is the longest possible side of the triangle if all sides are whole numbers?