Free Printable WorksheetMathGeometryMath CurriculumG-CO.C (9-11), G-SRT.B (4-5)

GEO.35 Complete missing steps in a proof Worksheet

Download our free printable Geometry Math worksheet on GEO.35 Complete missing steps in a proof. Ideal for classroom practice, homeschool learning, independent homework, and standardized test preparation. Available in both print-ready PDF and editable DOCX formats.

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Geometry Math worksheet provides structured practice on GEO.35 Complete missing steps in a proof. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

GEO.35 Complete missing steps in a proof - Primary standard selected for prompt fields in this prompt cell: CCSS G-CO.C (9-11), G-SRT.B (4-5). Skill statement in this prompt cell: Select the missing statement or reason that correctly completes a proof. Associated standards listed with this skill in the curriculum source: CCSS G-CO.C (9-11), G-SRT.B (4-5); FL MA.912.GR.1.*; MA 2017-Geometry C; NY HS Geometry Overview. Use this prompt-provided wording as the supporting standard description for this workflow.

Whether you are an educator preparing classroom handouts, a tutor reinforcing weekly topics, or a parent supporting homeschool learning, this printable resource gives students the deliberate practice required to achieve subject fluency and master state standards.

Grade

Geometry

Subject

Math

Domain

Math Curriculum

Formats

PDF & DOCX

Sample Practice Problems

Preview the types of problems and questions covered in this worksheet

Below are sample questions representative of the exercises included on this worksheet and related GEO.35 Complete missing steps in a proof skill assessments:

Problem 1Difficulty: Mastery

Square ABCD has diagonals AC and BD intersecting at E. A proof lists AB congruent to CB, AE congruent to CE, and BE congruent to BE. Which missing row comes before concluding angle ABE is congruent to angle EBC by CPCTC?

Atriangle ABE is similar to triangle CBE; AA Similarity

BAC is perpendicular to BD; Definition of square

Cangle ABE is a right angle; Linear Pair Postulate

Dtriangle ABE is congruent to triangle CBE; SSS Congruence

Solution & Explanation:The two triangles have three congruent side pairs: AB with CB, AE with CE, and shared side BE. SSS proves congruence, so CPCTC can compare the angles at B.

Problem 2Difficulty: Mastery

Lines AE and BD intersect at C, and AB is parallel to DE. A proof has angle ACB congruent to angle DCE by vertical angles and angle ABC congruent to angle CDE by alternate interior angles. Which missing conclusion and reason are correct?

AAC is perpendicular to CE; Definition of perpendicular lines

Btriangle ABC is congruent to triangle EDC; HL Congruence

Ctriangle ABC is similar to triangle EDC; AA Similarity

DAB is congruent to DE; CPCTC

Solution & Explanation:Two angle pairs are congruent: the vertical angles at C and the alternate interior angles from AB parallel to DE. Therefore the triangles are similar by AA.

Problem 3Difficulty: Mastery

Lines l and m are parallel, and lines m and n are parallel. Which missing conclusion and reason complete the proof?

Al is congruent to n; CPCTC

Bl is parallel to n; Transitive Property of Parallel Lines

Cm is the midpoint of l and n; Definition of midpoint

Dl is perpendicular to n; Linear Pair Postulate

Solution & Explanation:If two lines are each parallel in a chain with the same line direction, the first and third lines are parallel by transitivity.

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Frequently Asked Questions

Common questions about printing, using, and solving this worksheet

QHow do I download and print this GEO.35 Complete missing steps in a proof worksheet?

Click either the "Download PDF" or "Download DOCX" button at the top of the page. You can print the PDF directly from your browser or edit the DOCX file in Microsoft Word or Google Docs to tailor the questions to your students.

QIs this GEO.35 Complete missing steps in a proof worksheet free for teachers and homeschoolers?

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Yes! In addition to this printable worksheet, students can practice GEO.35 Complete missing steps in a proof interactively on our platform with automated grading, instant score tracking, and detailed step-by-step solutions.

QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Geometry Math students. It aligns with educational standard G-CO.C (9-11), G-SRT.B (4-5) (Primary standard selected for prompt fields in this prompt cell: CCSS G-CO.C (9-11), G-SRT.B (4-5). Skill statement in this prompt cell: Select the missing statement or reason that correctly completes a proof. Associated standards listed with this skill in the curriculum source: CCSS G-CO.C (9-11), G-SRT.B (4-5); FL MA.912.GR.1.*; MA 2017-Geometry C; NY HS Geometry Overview. Use this prompt-provided wording as the supporting standard description for this workflow.).