I'm just guessing but if you subtract the 1 from 11 and divide by 2 on both sides then T would equal 5
The answer & explanation for this question is given in the attachment below.


__________________________________________

- BCD is an isosceles right triangle , right angled at D
- ABC is an equilateral triangle


❒ Sum of all angles is 180° , since it is an equilateral triangle all the three angles would be same





(Isosceles triangle)









Answer:
15 pieces
Step-by-step explanation:
we see if we get 3 pieces from one bread then 5 will be 15
hope it helps you
please mark me as brainlist