Question

Which dimensions cannot create a

triangle?
• three angles measuring 25° 65°, and 90°
• three angles measuring 50°, 30°, and 100°
• three sides measuring 5 in., 12 in., and 13 in.
• three sides measuring 4 ft, 8 ft, and 14 ft

Answer 1

three angles measuring 50°, 50°, 50° because they would add up to 150°. a triangles angles can only add up to 180°

Explanation:

Answer 2

three sides measuring 4 ft, 8 ft, and 14 ft

Explanation:

The sum of the 3 angles of a triangle add to 180

three angles measuring 25° 65°, and 90° 25+65+90 =180

• three angles measuring 50°, 30°, and 100°50+30 +100 = 180

The sides of a triangle a<b<c (a+b) >c

• three sides measuring 5 in., 12 in., and 13 in.

(5+12)>13 true

• three sides measuring 4 ft, 8 ft, and 14 ft

(4+8) >14 false