Help me please if you can

Can you draw an isosceles triangle with only one 80 degree angle?

In the following situation, determine whether you are asked to determine the number of permutations or combinations. then do the calculation how many ways are there to pick a starting five from a basketball team of twelve members? a. permutation; ps - 2520 b. combination; 1c, - 792 c. combination: 2cs - 2520 d. permutation; ps - 95040

In the diagram below? p is circumscribed about quadrilateral abcd. what is the value of x