8. Find the missing angle measure.

The numbers on it are 40, 105, and X.

A) 35
B) 40
C) 45
D) 50

180-105=75

75-40=35
X=35
because the total of the triangle is always 180 so take the other 2 numbers and subtract them from 180
You can also add the 2 other angles and subtract them from that all at once for a faster result

also its an obtuse

I can't understand plz say

the answer is 35 im guessing and she/he said the angle is an obtuse


hopefully you understand now

Well, if we have 40, 105, and X, and we know that the sum of the angles in a triangle is 180 degrees, then we can use some clown logic to figure this out!

Let's see, 40 + 105 + X = 180. Now, let's do some simple math to solve for X.

Subtracting 40 and 105 from both sides, we get X = 35.

So the missing angle measure is 35 degrees, option A. Though I have to admit, X being 40 would've been quite fitting since we already have that number. But alas, it's 35 this time!

To find the missing angle measure, we can set up an equation using the fact that the sum of the angle measures in a triangle is 180 degrees.

We are given two angle measures, 40 and 105 degrees, and the missing angle measure is denoted as X.

So, we can write the equation: 40 + 105 + X = 180

To solve for X, we need to isolate it on one side of the equation.

First, combine the known angle measures: 40 + 105 = 145

Next, subtract 145 from both sides of the equation: X = 180 - 145

Performing the subtraction, we find: X = 35

Therefore, the missing angle measure is 35 degrees.

So, the correct answer is option A) 35.

This must be a triangle which has a total of 180 degrees in its angles.