Answer:
Angle S is a straight angle.
Step-by-step explanation:
180° is a straight line.
Answer:
Step-by-step explanation:
Since the fractions are like, their denominators are 11, then
consider the values that sum to give 18 , that is
1 + 9 + ? = 18
10 + ? = 18 ( subtract 10 from both sides )
? = 8
Then the third fraction is
Combine like terms and use inverse operations
Is the base (leght width) plus the areas of each of the four triangular faces