​ (a)   are the most ​ (b)   shape that we learn about in ​ (c)   . Almost ​ (d)   the shapes are formed when ​ (e)   lines come together in particular positions and orientations

​ (a)   is the combination of two ​ (b)   with a ​ (c)   endpoint. The symbol for an angle is ∠. The ​ (d)   point of an angle is called the ​ (e)   of an angle. The two straight sides of the angle are called arms of the angle.

all about properly saving, spending, investing, and protecting your money so you can live your ambition of a good life (a)  

your income vs. expenses, so you can spend within your means and manage lifestyle expectations. (a)  

Everyone's ​ (a)   fund will be different. It's often advised to have ​ (b)   months of expenses saved in ​ (c)   of emergency. This amount is often ​ (d)   in consideration of your ​ (e)   and your fixed expenses

Write down the place value of the digit 3 in 213,245 (a)  

A ​ (a)   is a three‐sided figure with three angles in its interior. The symbol for triangle is Δ. A triangle is named by the three letters at its vertices (the plural of vertex), a fancy name for corners. This is Δ ABC (Figure 1).

Figure 1 A triangle.

As you can imagine, the measuring of triangles and more ​ (b)   figures became important long ago because of their role in ​ (c)   . Modern ​ (d)   has continued to find more and more practical applications requiring knowledge of triangles.

Note that any ​ (e)   figure in the plane with three or more sides can be subdivided into triangles (see Figure ). Consequently, what you learn about triangles can also be useful in studying more complex figures.

A ​ (a)    is a quadrilateral with only one ​ (b)   of opposite sides ​ (c)   The parallel sides are called ​ (d)   , and the nonparallel sides are called​ (e)   . A segment that joins the midpoints of the legs is called the median of the trapezoid. Any segment that is perpendicular to both bases is called an altitude of the trapezoid (Figure 1). The length of an altitude is called the height of the trapezoid.

​ (a)   is the most obvious scenario where we witness the application of ​ (b)   mathematical concepts. We use math to ​ (c)   prices, determine the ​ (d)   deal, and calculate the quantity to be purchased, the weight, the price per​ (e)   , the discount, and the overall cost of the item before making a purchase. We also use math when calculating the total purchase cost to ensure that we are sticking to the budget and have enough money to cover the cost.