MGC New Life Christian Academy Junior High School Department Mathematics 8 Reviewer (For answer key, please visit pastorjefframos.weebly.com) 1. Complete with always, sometimes, or never to make a true statement. a. Intersecting lines are always coplanar. b. Three points are sometimes noncollinear. c. Three noncollinear points are never noncoplanar. 2. Draw & label a figure for each relationship. a. Point C and line m line in plane Q. Line m intersects line n and T. Line m and C are coplanar but m, n, and C are not. .C n T m Q b. Lines a and b intersecting at point T with line a in plane Q, but line b not in Q. b T a Q 3. Refer to the number line below to find each measure. (5) S Q -3 -1 2 P R 5 7 3.5 4. Find the coordinate of midpoint of QR 6 1. RS 8 2. PR -0.5 5. Find the coordinate of midpoint of PQ 0.5 3. Find the coordinate of midpoint of SQ 4. Find the value of x, if R is the midpoint of segment QS, QR = 8 – x, and RS = 5x – 10. (Ans. 3) 5. If Y is the midpoint of segment XZ, XY = 2x + 11, and YZ = 4x – 5, find the value of x and the measure of XZ. (Ans. 8; 54) 6. Find LM is L is between N and M, NL = 6x – 5, LM = 2x + 3, and NM = 30 (Ans. 11) 7. If R is between W and S, RS = 7x + 8, RW = 4x – 3, and WS = 6x + 10, find the value of x and WS. (Ans. 1; 16) 8. Segment TQ and segment AB bisect each other at point M. Solve for x. a. AB = 24, MB = 2x + 4 (Ans. 4) b. TQ = 4x + 16, TM = 20 (Ans. 6) c. TM = ½ x – 4 , TQ = 12 (Ans. 20) “I can do everything through him who gives me strength.” Philippians 4:13

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