Try this ACT math practice question on the internal angles of an octagon.

In a regular octagon, all $8$ interior angles are congruent. What is the measure of each interior angle of a regular octagon?

1. $\quad 22.5^{\circ}$
2. $\quad 45^{\circ}$
3. $\quad 120^{\circ}$
4. $\quad 135^{\circ}$
5. $\quad 150^{\circ}$

Try this ACT math practice question on manipulating logarithm expressions.

What value of $x$ satisfies the equation below
$$\log_{3} 36 \; – \log_{3} 4 = \log_{4} x$$

1. $\quad 3$
2. $\quad 16$
3. $\quad 32$
4. $\quad 72$
5. $\quad 144$

Try this ACT math practice question on finding the relationship between the angles formed by a line intersecting a pair of parallel lines.

In the figure below, $l \parallel m$ and $m \perp n$. What is $y$ in terms of $x$ ?

1. $\quad x-45$
2. $\quad x-90$
3. $\quad 45-x$
4. $\quad 90-x$
5. $\quad 180-x$

Try this ACT math practice question that tests your ability to simplify expressions that contain roots and fractional exponents.

For $x \gt 0$, which of the following expressions is equivalent to $(\sqrt[4]{x^3})(\sqrt{x})^3$?

1. $\quad x$
2. $\quad x^2$
3. $\quad x(\sqrt[4]{x})$
4. $\quad x^2(\sqrt[4]{x})$
5. $\quad x^3(\sqrt[4]{x})$

Try the following ACT math practice question that tests your understanding of evaluating trigonometric expressions in the context of right triangles.

In the right triangle $ABC$ shown below, what is the value of $1 – \cos^2{A} – \cos^2{B}$ ?

1. $\quad -1$
2. $\quad \displaystyle -\frac{1}{2}$
3. $\quad \displaystyle \hskip 0.8em 0$
4. $\quad \displaystyle \hskip 0.8em 1$
5. $\quad \displaystyle \hskip 0.6em \frac{1}{2}$