# ACT Math – Plane Geometry Review

The ACT Math – Plane Geometry Review page focuses on the math concepts required to do well on the plane geometry problems encountered in the ACT Math test. If a student answered incorrectly some of the questions in the Plane Geometry Quiz, no need to worry. He/she will find on this page online resources to review or practice the topics he/she has trouble with.

Note: Go to the tools to check other review pages or quizzes.

#### Plane Geometry Review Topics

##### Lines and angles

Homeschoolmath.net

##### Types of angles

Math is Fun

BasicMathematics.com

##### Vertical angles

BasicMathematics.com

##### Angles and parallel lines

BasicMathematics.com

Math is Fun(1)

Math is Fun(2)

##### Pythagorean Theorem

Khan Academy – Videos part 1(10:45)part 2(13:02)

Math is Fun

Math is Fun

Math Goodies

mathopenref.com

Math is Fun

##### Circles

Khan Academy – Area (4:01)Circumference ( 1:52)

Math is Fun

Math Goodies – Area Circumference

##### 3-dimensional shapes

BasicMathematics.com

##### ACT-specific resources

Sparknotes

Varsity Tutors – 6 ACT problems

Once the student has reviewed the skill he/she was struggling with, he/she should take the Plane Geometry Quiz again to make sure he/she can answer all the questions correctly.

#### The CollegeGuide4Parents Math Tools

The ACT Math test focuses on concepts of pre-algebra, elementary algebra, intermediate algebra, coordinate geometry, plane geometry and trigonometry. CollegeGuide4Parents created 7 short interactive quizzes (see below for a complete list) designed to help students quickly identify the skills they need to review in each of these areas. When they are done answering a quiz, students are presented with a customized report which shows the mistakes made, the correct answers and the topics they need to work on.

Students are also directed to a review page (see below for a list of all the review pages) which shows a compilation of online resources they can consult to quickly study the concepts they have difficulties with. Review pages also include links to practice worksheets for those needing to spend extra time on some topics. Finally, the review pages also provide links to ACT problems which the students can work on once they are ready to practice.

##### Quizzes:

(order of operations; even and odd numbers; adding and subtracting signed numbers; multiplying and dividing signed numbers)

(factors and multiples; primes; divisibility; remainders; percentages; fractions; decimals; ratios; proportions; mean, median, and mode; probability; absolute values; exponents; square roots; series)

(substitution; polynomial simplification; linear equations; FOIL; inequalities)

(solving quadratic equations; systems of equations; functions; matrices; logarithms; and equations with variable on both sides)

(inequalities and graphs; distance between points; midpoint; coordinate plane; slope between 2 points; slope of perpendicular and parallel lines; slope-intercept form; intercept; graphs; vertex of parabola)

(lines and angles; acute, obtuse, complementary, and supplementary angles; vertical angles and parallel lines; special triangles; similar triangles; pythagorean theorem; perimeter and area of circles, triangles, and rectangles; volume of 3-dimensional shapes)

(fundamentals of trigonometry; Sine, Cosine, and Tangent; Sine, Cosine, Tangent and the right triangle; graphs of Sine, Cosine and Tangent functions; some more advanced concepts such amplitude, period, phase shift and frequency)

##### Review Pages:

(order of operations; even and odd numbers; adding and subtracting signed numbers; multiplying and dividing signed numbers)

(factors and multiples; primes; divisibility; remainders; percentages; fractions; decimals; ratios; proportions; mean, median, and mode; probability; absolute values; exponents; square roots; series)

(substitution; polynomial simplification; linear equations; FOIL; inequalities)

(solving quadratic equations; systems of equations; functions; matrices; logarithms; and equations with variable on both sides)

(inequalities and graphs; distance between points; midpoint; coordinate plane; slope between 2 points; slope of perpendicular and parallel lines; slope-intercept form; intercept; graphs; vertex of parabola)

(lines and angles; acute, obtuse, complementary, and supplementary angles; vertical angles and parallel lines; special triangles; similar triangles; pythagorean theorem; perimeter and area of circles, triangles, and rectangles; volume of 3-dimensional shapes)

(fundamentals of trigonometry; Sine, Cosine, and Tangent; Sine, Cosine, Tangent and the right triangle; graphs of Sine, Cosine and Tangent functions; some more advanced concepts such amplitude, period, phase shift and frequency)