Draw Triangles with Given Sidelengths

Use the sides to identify the triangle

0 sides the same - scalene triangle

2 sides the same - isosceles triangle

3 sides the same - equilateral triangle

Use the sides to identify the triangle

0 sides the same - scalene triangle

2 sides the same - isosceles triangle

3 sides the same - equilateral triangle

A triangle can be constructed with sides 7.7cm,6.8 cm and 12 cm using -------------------- criterion.

For ∆ABC, how many possible triangles can be drawn: ∠A = 75°, a = 15 cm, b = 12 cm?

• 0

• 1

• 2

• Can't determine

Each of the sails on Joshua’s sailboat forms a triangle. The side lengths of one sail are 13, 17, and 20. What is the measure of each side of the sail?

*the largest angle is opposite the longest side length

• XY = 13, XZ = 20, YZ = 17

• XY = 17, XZ = 13, YZ = 20

• XY = 20, XZ = 17, YZ = 13

• XY = 13, XZ = 17, YZ = 20

What is the measure of BC?

• 12

• 6

• not enough information

• 10

Do the following lengths form a triangle

• Yes

• No

AB = 4cm BC = 3 cm

• Unique Triangle (1 triangle)

• More than one triangle

• Not Possible ( 0 triangles)

Can the following 3 numbers be side measures of a triangle

8, 2, 8

• Yes

• No

Which of the following side measures form a triangle?

• 4, 6, 10

• 4, 6, 9

• 4, 6, 11

• 2, 4, 6