PSAT MATH REVIEW

Front

What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions using symbols such as <, >, ≤, or ≥.

Front

How do you solve the inequality 3t + 9 ≥ 15?

Back

Subtract 9 from both sides to get 3t ≥ 6, then divide by 3 to find t ≥ 2.

Front

What does it mean for two triangles to be similar?

Back

Two triangles are similar if their corresponding angles are equal and their corresponding sides are in proportion.

Front

If AB/DE = BC/EF = AC/DF = 3, what can be said about triangles ABC and DEF?

Back

Triangles ABC and DEF are similar because their corresponding sides are in proportion.

Front

What is the measure of angle EDF if angle BAC is 20 degrees in similar triangles?

Back

Angle EDF is also 20 degrees because corresponding angles in similar triangles are equal.

Front

How do you calculate the measure of an angle in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees. Use this property to find unknown angles.

Front

What is the solution to the equation x + 5 = 17?

Back

x = 12.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.

Front

What is the difference between a linear equation and an inequality?

Back

A linear equation shows equality, while an inequality shows a relationship of greater than or less than.