# 1 2 Line Segments and Distance Over Lesson

• Slides: 14

1– 2 Line Segments and Distance Over Lesson 1– 1 Turn homework in. Name three points, two lines, and a Ray. Also, find a point that is coplanar with Plane W.

1– 2 Line Segments and Distance Targeted TEKS G. 5(B) Construct congruent segments, congruent angles, a segment bisector, an angle bisector, perpendicular lines, the perpendicular bisector of a line segment, and a line parallel to a given line through a point not on a line using a compass and straightedge. Also addresses G. 5(C). Mathematical Processes G. 1(E), Also addresses G. 1(B)

1– 2 Line Segments and Distance

1– 2 Line Segments and Distance Find Measurements by Adding or Subtracting Find XZ. Assume that the figure is not drawn to scale. ___ XZ is the measure of XZ. Point Y is between X and Z. XZ can be found by adding XY and YZ.

1– 2 Line Segments and Distance Find Measurements by Adding or Subtracting Add.

1– 2 Line Segments and Distance Think, Write, Pair, Share Find BD. Assume that the figure is not drawn to scale. 50. 4 mm A. 16. 8 mm B. 57. 4 mm 16. 8 mm B C. 67. 2 mm D. 84 mm C D

1– 2 Line Segments and Distance Write and Solve Equations to Find Measurements ALGEBRA Find the value of x and ST if T is between S and U, ST = 7 x, SU = 45, and TU = 5 x – 3. Draw a figure to represent this situation. ST + TU = SU 7 x + 5 x – 3 = 45 7 x + 5 x – 3 + 3 = 45 + 3 12 x = 48 Betweenness of points Substitute known values. Add 3 to each side. Simplify.

1– 2 Line Segments and Distance Write and Solve Equations to Find Measurements x =4 Simplify. Now find ST. ST = 7 x Given = 7(4) x=4 = 28 Multiply. Answer: x = 4, ST = 28

1– 2 Line Segments and Distance Think, Write, Pair, Share ALGEBRA Find the value of n and WX if W is between X and Y, WX = 6 n – 10, XY = 17, and WY = 3 n. A. n = 3; WX = 8 B. n = 3; WX = 9 C. n = 9; WX = 27 D. n = 9; WX = 44

1– 2 Line Segments and Distance

1– 2 Line Segments and Distance

1– 2 Line Segments and Distance Find Distance on a Number Line Use the number line to find QR. The coordinates of Q and R are – 6 and – 3. QR = | – 6 – (– 3) | = | – 3 | or 3 Answer: 3 Distance Formula Simplify.

1– 2 Line Segments and Distance Think, Write, Pair, Share Use the number line to find AX. A. 2 B. 8 C. – 2 D. – 8

1– 2 Line Segments and Distance Summarize what you have learned in this lesson. Use one or more good sentences.