Every SAT Math section includes a box of useful geometry formulas and rules — but to succeed on the SAT, you can’t rely only on that given information. You need to be familiar with numbers, operations, algebra, geometry, functions, and probability. Here are just a few of the important math-related facts you need to know:

• Some phrases — less than, fewer than, shorter than, subtracted from — reverse the order of subtraction (for example, four less than x is x – 4).

• In a triangle, the largest angle is opposite the largest side, and the smallest angle is opposite the smallest side.

• The sum of two sides of any triangle must be larger than the length of the third side.

• In a circle, inscribed angles are half as large as their arcs.

• A tangent line and a radius always form a right angle.

• To solve a linear equation, isolate the variable on one side of the equal sign.

• A base to the zero power equals one (100 = 1, for example).

• Anything quadratic on the SAT can usually be factored.