## ASVAB Math Knowledge Practice Test 613009

 Questions 5 Topics Acute & Obtuse Angles, Cubes, Operations Involving Monomials, Trapezoid, Two Variables

#### Study Guide

###### Acute & Obtuse Angles

An acute angle measures less than 90°. An obtuse angle measures more than 90°.

###### Cubes

A cube is a rectangular solid box with a height (h), length (l), and width (w). The volume is h x l x w and the surface area is 2lw x 2wh + 2lh.

###### Operations Involving Monomials

You can only add or subtract monomials that have the same variable and the same exponent. However, you can multiply and divide monomials with unlike terms.

###### Trapezoid

A trapezoid is a quadrilateral with one set of parallel sides. The area of a trapezoid is one-half the sum of the lengths of the parallel sides multiplied by the height. In this diagram, that becomes ½(b + d)(h).

###### Two Variables

When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)