Ineed to solve for the question mark.

The answer to the question mark is 95°

Step-by-step explanation:

First let's look at the 155°:

Since a straight line is automatically 180°, to find the other side of the length (aka one of the missing parts of the triangle), you would do 180-155. You will then get 35 as your answer.

Using that same 35 number:

Now, in a triangle, the total number of degrees in ALL triangles is 180 NO MATTER WHAT! Since we now have two angles, we just need to add them together and subtract by 180. 35 + 60 = 95. 180-95 = 85.

Now for the ? mark:

Remember when I said that a straight line equals 180? Well, now that we have one side of the line, (85), all we need is the other. 180-85=95. Therefore, the answer is 95°.

option a, c,d are correct.

step-by-step explanation:

from the given figure, it is given that z is equidistant from the sides of the triangle rst, then from triangle tzb and triangle szb, we have

tz=sz(given)

bz=zb(common)

therefore, by rhs rule,δtzb ≅δszb

by cpctc, sz≅tz

also, from δctz and δasz,

tz=sz(given)

∠tcz=∠saz(90°)

by rhs rule, δctz ≅ δasz, therefore by cpctc, ∠ctz≅∠asz

also,from δasz and δzsb,

zs=sz(common)

∠zbs=∠saz=90°

by rhs rule, δasz ≅δzsb, therefore, by cpctc, ∠asz≅∠zsb

hence, option a, c,d are correct.