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100+ Free ATLAS Geometry EOC Practice Questions

Prepare for the Arkansas ATLAS Geometry End-of-Course Assessment exam with instant access — no signup required.

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Key Facts: ATLAS Geometry EOC Exam

ATLAS Geometry EOC is Arkansas's statewide Geometry end-of-course summative, CAT-delivered by Cambium for DESE, untimed, free to students, and reported in four levels with Level 3+ as grade-level achievement.

Sample ATLAS Geometry EOC Practice Questions

Try these sample questions to test your ATLAS Geometry EOC exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Two lines intersect and form four angles. If one angle measures 118°, what is the measure of the vertical angle opposite it?
A.118°
B.62°
C.59°
D.242°
Explanation: Vertical angles formed by intersecting lines are congruent. The angle opposite 118° also measures 118°.
2Two angles form a linear pair. One angle measures 73°. What is the measure of the other angle?
A.107°
B.73°
C.17°
D.146°
Explanation: A linear pair is supplementary, so the angles sum to 180°. 180° − 73° = 107°.
3In triangle ABC, m∠A = 42° and m∠B = 67°. What is m∠C?
A.71°
B.109°
C.25°
D.180°
Explanation: The sum of the interior angles of a triangle is 180°. m∠C = 180° − 42° − 67° = 71°.
4A right triangle has legs of lengths 6 and 8. What is the length of the hypotenuse?
A.10
B.14
C.7
D.48
Explanation: By the Pythagorean Theorem, c² = 6² + 8² = 36 + 64 = 100, so c = 10.
5In a 45°-45°-90° triangle, each leg measures 7. What is the length of the hypotenuse?
A.7√2
B.7√3
C.14
D.7/2
Explanation: In a 45°-45°-90° triangle the hypotenuse is leg × √2. The hypotenuse is 7√2.
6Parallel lines are cut by a transversal. One corresponding angle measures 55°. What is the measure of the other corresponding angle?
A.55°
B.125°
C.35°
D.110°
Explanation: Corresponding angles formed by a transversal with parallel lines are congruent, so both measure 55°.
7Two angles are complementary. One measures 28°. What is the measure of the other?
A.62°
B.152°
C.28°
D.72°
Explanation: Complementary angles sum to 90°. 90° − 28° = 62°.
8In triangle DEF, m∠D = 50° and m∠E = 60°. What is the measure of the exterior angle at F?
A.110°
B.70°
C.50°
D.130°
Explanation: The exterior angle equals the sum of the two remote interior angles: 50° + 60° = 110°. (Also, m∠F = 70°, so the adjacent exterior is 180° − 70° = 110°.)
9Parallel lines m and n are cut by transversal t. An alternate interior angle to a 128° angle measures how many degrees?
A.128°
B.52°
C.64°
D.180°
Explanation: Alternate interior angles are congruent when lines are parallel, so the measure is also 128°.
10Parallel lines are cut by a transversal. One consecutive (same-side) interior angle measures 105°. What is the measure of the other consecutive interior angle?
A.75°
B.105°
C.15°
D.210°
Explanation: Consecutive interior angles are supplementary when lines are parallel. 180° − 105° = 75°.

About the ATLAS Geometry EOC Exam

The Arkansas ATLAS Geometry End-of-Course Assessment is part of the Arkansas Teaching, Learning, and Assessment System summative program administered by the Division of Elementary and Secondary Education. It measures student achievement of Arkansas Academic Standards in Geometry for students completing the Geometry course. Geometry EOC is course-based and may be taken by accelerated middle school students enrolled in Geometry in place of grade-level math. The official assessment is computer-adaptive within the grade or course, includes multiple item types (and for ELA a writing component), and is untimed under PATH rules. Results are reported in four performance levels (Level 1–Level 4), with Level 3 or higher indicating grade-level achievement. OpenExamPrep offers free English multiple-choice practice aligned to ATLAS reporting categories as a study aid—not official items or a full format simulation.

Questions

46 scored questions

Time Limit

Untimed. The official blueprint lists an estimated average test time of 75 to 85 minutes; PATH sets a 75-minute minimum sit time for Geometry (the 2024 average was about 71 minutes). First-semester EOC window available when students complete at least 75% of the eligible course.

Passing Score

Results are reported in four performance levels (Level 1–Level 4). Level 3 or higher indicates the student has demonstrated achievement aligned to grade-level Arkansas Academic Standards (2023–24 technical report / 2024 standard setting).

Exam Fee

Free to students and families; ATLAS is a state-funded statewide summative assessment administered through Arkansas public schools. (Arkansas Division of Elementary and Secondary Education (DESE); delivered by Cambium Assessment, Inc. (CAI) for the Arkansas Department of Education / DESE)

ATLAS Geometry EOC Exam Content Outline

about 26%

Right Triangles, Lines & Angles

Right-triangle relationships, lines, and angle relationships.

about 26%

Geometric Figures

Properties and relationships of geometric figures and polygons.

about 24%

Circles

Circle theorems, angles, arcs, and related measures.

about 24%

Transformations, Similarity & Congruence

Transformations, similarity, and congruence criteria and applications.

How to Pass the ATLAS Geometry EOC Exam

What You Need to Know

  • Passing score: Results are reported in four performance levels (Level 1–Level 4). Level 3 or higher indicates the student has demonstrated achievement aligned to grade-level Arkansas Academic Standards (2023–24 technical report / 2024 standard setting).
  • Exam length: 46 questions
  • Time limit: Untimed. The official blueprint lists an estimated average test time of 75 to 85 minutes; PATH sets a 75-minute minimum sit time for Geometry (the 2024 average was about 71 minutes). First-semester EOC window available when students complete at least 75% of the eligible course.
  • Exam fee: Free to students and families; ATLAS is a state-funded statewide summative assessment administered through Arkansas public schools.

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

ATLAS Geometry EOC Study Tips from Top Performers

1Study the Arkansas Academic Standards and ATLAS reporting categories for Geometry rather than memorizing random trivia.
2Use the free ATLAS practice/training tests on the official ATLAS portal so students know the online tools before test day.
3Build stamina with untimed practice sessions that mirror one content subject per sitting, matching PATH scheduling guidance.
4Review wrong answers by explaining why each distractor is incorrect using evidence or calculation steps.
5Work multi-step problems and proofs: the official blueprint targets roughly half its items at DOK 2 and about a quarter at DOK 3, so recall alone is not enough.
6The four reporting categories are close in weight (26/26/24/24), so circles and transformations deserve as much study time as right triangles and geometric figures.

Frequently Asked Questions

What is the Arkansas ATLAS Geometry end-of-course assessment?

It is the statewide end-of-course summative assessment in the Arkansas Teaching, Learning, and Assessment System (ATLAS) for Geometry, administered by DESE and aligned to Arkansas Academic Standards. Results are used for school accountability and to report student achievement.

Who takes this ATLAS assessment?

Arkansas public school students enrolled in the corresponding grade (for grade-level tests) or EOC-eligible course (Algebra I, Geometry, or Biology). Accelerated students may take math EOCs in place of grade-level math when enrolled in the course. Students who qualify for the alternate assessment take DLM instead.

How many questions are on the official ATLAS test?

Official EOC blueprint: 46 operational items — Right Triangles/Lines & Angles 12–14 items (26%), Geometric Figures 12–14 items (26%), Circles 10–12 items (24%), and Transformations/Similarity & Congruence 10–12 items (24%) (Arkansas Mathematics Standards Interim and Summative Blueprint, DESE, updated July 28, 2025).

Is ATLAS timed?

No. Official PATH guidance states ATLAS 3–10 content and EOC tests are untimed. Schools schedule minimum sit times for planning, and students should finish a summative content test within one instructional day.

What score is considered proficient?

ATLAS reports four performance levels (Level 1–Level 4). Level 3 or higher indicates achievement aligned to grade-level Arkansas Academic Standards based on the 2024 standard-setting cut scores.

Are these practice questions the real ATLAS exam?

No. These free multiple-choice practice questions are a study aid aligned to Arkansas standards and ATLAS reporting categories. They are not official ATLAS items and do not replace authentic reading/writing, multi-step math modeling, science investigations, or the official computer-adaptive assessment.