WorksheetsPractice
Total questions: 13
Worksheet time: 1hrs 5mins
Which set of side lengths could NOT be used to form a triangle?
2cm, 6cm, 7cm
7cm, 15cm, 8cm
5cm, 5cm, 5cm
8cm, 9cm, 6cm
Which set of side lengths could be used to form a triangle?
4ft, 5ft, 9ft
8ft, 6ft, 15ft
12ft, 2ft, 10ft
5ft, 8ft, 12ft
Brooke drew a triangle. One side of the triangle is 6cm long and the other side of the triangle is 11cm long. Which could be the length of the third side of the triangle?
3 cm
5 cm
12 cm
17 cm
It is possible for the side lengths 5 cm, 8 cm, and 15 cm to form a triangle.
True or False?
True
False
Four students in a math class are creating triangles with yarn. Which student chose three side lengths that could form a triangle?
Fred: 4in, 5in, 6in
Sam: 8in, 12in, 4in
Erica: 11in, 10in, 21in
Steve: 5in, 7in, 15in
My triangle has these side lengths:
6 ft, 7ft, 8ft
Is this a triangle?
Yes! The sum of my two smallest sides is 13 and 8 is smaller than 13. IT WORKS!
No!! It doesn't follow the rules!
Let's review:
Triangles need:
Angles that will add up to equal 180 degrees
Angles to equal 90 degrees
Third side to be BIGGER than the sum of your two smallest sides.
Third side to be SMALLER than the sum of your two smallest sides.
Which side of the triangle should be the longest?
A
B
C
Which side of the triangle should be the longest?
A
B
C
Which set of lengths are the lengths of a triangle?
3 cm, 6 cm, 9 cm
16 in, 12 in, 3 in
10 ft, 10 ft, 18 ft
17 m, 22 m, 29 m
Which set of lengths are the lengths of a triangle?
2 cm, 1 cm, 5 cm
40 in, 20 in, 30 in
18.5 ft, 36.9 ft, 16.9 ft
15 m, 13 m, 30 m
3, 5, 8
