ACT Math: Tips for Conquering Geometry Problems

The ACT Math section tests your mathematical skills across various topics, including algebra, trigonometry, and geometry. Geometry problems on the ACT can be particularly challenging, as they require a good understanding of geometric principles and the ability to apply them effectively. In this article, we'll provide you with tips to help you conquer geometry problems on the ACT.

Understand the Geometry Topics

Before diving into specific strategies, it's essential to have a good grasp of the geometry topics commonly covered on the ACT. These topics include:

1. Lines and Angles: 

Familiarize yourself with the properties of lines, angles, and triangles. Know the different types of angles, such as complementary, supplementary, vertical, and corresponding angles.

2. Circles: 

Learn the properties of circles, including the radius, diameter, circumference, and area. Understand concepts like central angles, inscribed angles, and arc length.

3. Quadrilaterals: 

Be comfortable working with the properties of various quadrilaterals, such as squares, rectangles, parallelograms, and trapezoids.

4. Polygons: 

Understand the properties of polygons, including regular polygons. Be able to calculate the interior and exterior angles of polygons.

5. Coordinate Geometry: 

Work with coordinate planes, points, lines, and slopes. Understand the distance formula and the midpoint formula.

6. Transformations: 

Know the basics of transformations, including translations, reflections, rotations, and dilations.

Strategies for Conquering Geometry Problems

1. Draw Diagrams: For geometry problems, draw clear diagrams. A visual representation often makes it easier to understand and solve the problem.

2. Identify Key Information: 

Read the problem carefully to identify the key information. Look for measurements, angles, or relationships provided in the problem.

3. Apply Geometric Principles: 

Use your knowledge of geometric principles to identify relationships between different parts of the problem. Consider how different elements in the problem are connected.

4. Use the Answer Choices: 

When you're stuck, the answer choices can provide clues. Plug in the answer choices to see if they fit the problem conditions. This strategy can help you work backward to find the solution.

5. Practice Mental Math: 

Improve your mental math skills to calculate areas, angles, and other geometric quantities quickly.

6. Work with Formulas: 

Review and memorize key formulas related to geometry, such as the area and circumference of a circle, the Pythagorean theorem, and the properties of special triangles (e.g., 30-60-90 and 45-45-90 triangles).

7. Break Down Complex Shapes: 

If a problem involves a complex shape, break it down into simpler shapes that you can analyze individually. For example, divide a complex figure into rectangles or triangles.

8. Check Units: 

Be mindful of units. Make sure you're working with consistent units when solving problems that involve measurements.

9. Practice with Official Materials: 

Use official ACT practice materials to become familiar with the types of geometry problems that appear on the test.

10. Time Management: 

Allocate a specific amount of time to each problem. If a problem is taking too long, consider skipping it and returning to it later if time allows.

11. Eliminate Incorrect Answers: 

If you're unsure about the correct answer, use the process of elimination to eliminate obviously incorrect choices.


Conquering geometry problems on the ACT Math section requires a solid understanding of geometric principles and effective problem-solving strategies. By practicing regularly, reviewing geometry concepts, and employing the tips provided in this article, you can improve your ability to tackle geometry problems and perform well on the ACT Math section. Remember to manage your time wisely and stay focused on the test.