Side Lengths of a Triangle – Discovery Lab



Procedure: Choose 3 straws of the same color from your bag, and place them out on your table.Measure each one in centimeters (round to nearest cm), and place the measurements in the table.Try and form a triangle, where the pieces only touch by their ends.Add the lengths of the two shortest pieces together, and compare them to the other piece using >, < or =Put those pieces back in the bag, and complete the process with another colorColorMeasurements (cm)Form Triangle?Short side + short side (<,>,=) long sideexample3 cm, 1 cm, 2 cmno1 + 2 = 3Follow Up Questions: Compare your last two columns in the table – what do you notice regarding when you were/were not able to create a triangle? What can you conclude regarding the side lengths of a triangle? Would the side lengths 8 cm, 7 cm and 2 cm form a triangle? Why or why not? Would the side lengths 4 cm, 9 cm, and 5 cm for a triangle? Why or why not?The ________________ of any two sides of a triangle must be _________________ than the third side.When given two sides of a triangle and asked to find the possibilities for the length of the third side, you express your answer as an inequality: ________________________ < x < __________________________Examples: Directions: State if the three side lengths given can form a triangle.1. 4 cm, 9 cm, 2 cm2. 6 in, 9 in, 4 in3. 2 cm, 4 cm, 2 cmDirections: Given the two side lengths, determine the lengths of a third side such that a triangle could be formed.4. 5 m, 9 m5. 2 in, 8 in6. 3 cm, 12 cm ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download