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110 resources with the concept geometric proofs

Lesson Planet

Using Properties Homework

For Students 10th
In this geometry worksheet, 10th graders determine the property of the real number system that justifies each given statement and complete a two column proof in which they justifying the steps for solving an equation.  The one page...
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Geometric Proof and Angles

For Students 10th
In this geometry worksheet, 10th graders write two-column and paragraph proofs to prove angle pair relationships.  The one page worksheet contains five problems.  Answers are not included. 
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Parallelogram to Rectangle

For Students 10th
In this geometry activity, 10th graders are provided with a step-by-step guide for creating a construction that provides visual proof that any parallelogram can be turned into a rectangle with the same base and height. The two page...
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Lesson 6.1 Practice B: Polygons

For Students 9th - 11th
In this polygon instructional activity, learners identify polygons. They find the midpoints of line segments and write two-column proofs to determine congruent polygons. This three-page instructional activity contains approximately 55...
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Geometry: Line Segments

For Students 9th - 11th
In this line segment worksheet, students use algebra and geometry to determine the length of a given line segment. They find the midpoint of a line. This two-page worksheet contains seven problems.
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Proofs Chapter 2: Geometry

For Students 10th - 11th
In this geometry learning exercise, students look at given pictures and prove congruent lines and angles. This three-page learning exercise contains nine multi-step problems.
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Congruent Triangle Proofs Quiz

For Students 9th - 12th
A congruent triangles quiz challenges teenage mathematicians to complete a pair of geometric proofs. Each problem includes a picture of the triangles in question, a given set of information, and the five steps needed to finish the proof....
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Proving Triangles Congruent

For Students 10th
In this proving triangles congruent worksheet, 10th graders solve 4 different proofs for congruent triangles. First, they mark all congruent parts on each figure, then complete the prove statement and identify the postulate that can be...
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Right Triangles

For Students 10th
In this right triangles activity, 10th graders solve 5 problems that relate to different right triangles. First, they find the values of x and y so that each triangle is congruent to the other. Then, students write a two-column proof...
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Parallelograms

For Students 10th
In this parallelograms worksheet, 10th graders solve 8 different types of problems related to measuring various parallelograms. First, they use the figure, a parallelogram, illustrated at the top to solve each problem. Then, students...
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Identifying Similar Triangles

For Students 10th
In this identifying similar triangles worksheet, 10th graders solve 5 different proofs related to similar triangles. First, they identify the similar triangles in each figure and explain why they are similar, using the information to...
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Verifying Segment Relationships

For Students 10th
In this verifying segment relationships worksheet, 10th graders solve two proofs by following the same format used in algebra. They complete each of two proofs by naming the property that justifies each statement given. Students also...
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Verifying Angle Relationships

For Students 10th
In this angle relationships worksheet, 10th graders solve 8 various problems related to verifying angle relationships. First, they complete each statement if the measure of specific angles are equal to 43 and 56. Then, students write a...
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Verifying Segment Relationships

For Students 10th
For this verifying segment relationships worksheet, 10th graders solve 3 different proofs by verifying the segment relationship in each. They complete each proof given a specific statements supporting the statement with reasons. Then,...