If two sides of a triangle are 9 cm and 15 cm in length, which could be the measure of the third side? a) 23 cm b) 24 cm c) 25 cm d) 26 cm

23 cm

Step-by-step explanation:

The value that will with is anything below 9 + 15 with certain limitations put on that amount.

9 + 15 = 24. That means that the 9 and 15 if they were boards would lie exactly flat on the  24 cm board. No triangle would be formed. Please draw a diagram for yourself until you understand that sentence.

So 25 and 26 would also not be possible lengths for the third side. 25 is 1 cm too big and 26 would be 2 cm over the limit.