Since it is shown that 2 of the sides of the triangle are congruent, we can assume that they have the same angle measures.
so to solve for the missing angle you can set up an equation equal to 180 since all triangles add up to 180 degrees.
21 + 21 + x = 180
42 + x = 180
x = 138
the value of the missing angle should be 138 degrees
hope this helped
Answer: same
Step-by-step explanation:
Answer:

Step-by-step explanation:
10 3/9 - 10 2/5
we need to convert mixed fractions to improper fractions


Now, we have 93/9 - 52/5
We need to equate the denominators, before subtracting them.




The result of 10 3/9- 10 2/5 is - 3/45
The answer is 75 because if u multiply 75 by 1/3 you get 25 then 25 times 2/5 u get 10 75 is your answer
A. 5
(2,4,5,7,9)
5 is in the middle between 4 and 7.