Geometric Proof Teacher Resources

Find Geometric Proof educational ideas and activities

Showing 1 - 20 of 56 resources
In this geometry instructional activity, students take the derivative of functions. They prove theorems using geometric proofs. There are 13 questions.
Students examine their prior knowledge of algebra to explore geometric proof. In this proving supplementary and complementary lesson, students prove a solution to an equation using algebraic properties. Students then write their own statements to prove their logic. Students then complete a series of geometric proof problems.
Students engage in a lesson plan that is about the classification of triangles and the mathematical proofs involved in working with them. They work on a variety of problems that are created by the teacher with the focus upon the importance of classifying the triangles.
Middle schoolers explore geometric proofs. In this math activity, students prove the solution to an equation while using algebraic properties. Middle schoolers write their own statements to be proven.
Tenth graders complete a unit of lessons on congruent triangles and triangle proofs. They observe and participate in teacher-led discussions of examples of the methods to prove that triangles are congruent, and create an original proof.
Young scholars practice writing formal two column geometric proofs involving congruent triangles and congruent corresponding parts.
Tenth graders investigate angles and arcs in circles.  In this geometry lesson plan, 10th graders explore the relationship between the intersecting chords of a circle and the intercepted arcs.  The lesson plan makes use of a dynamic geometry utility and includes several problems that apply the theorem and a 2-column formal proof of the theorem.
High schoolers research the concept of the Pythagorean Theorem. In this Pythagorean Theorem lesson, students use the Internet to learn about the Pythagorean Theorem. High schoolers construct proofs of the Pythagorean Theorem.
Twelfth graders investigate maximum and minimum as it relates to billiard and mini golf. In this calculus lesson, 12th graders review how to find the maximum and minimum and write proofs to show how they arrive at their answer. They follow the example of a geometric proof to write their calculus proof.
High schoolers complete simple algebraic proofs to prepare them for more challenging geometric proofs. Class begins with a demonstration by the teacher, then students work out their own problems and share results with the class.
In this geometry worksheet, 10th graders supply the missing step or justification of a step in two column geometric proof.  The one page interactive worksheet contains five multiple choice questions and is self checking. 
In this geometric proof worksheet, students use geometric theorems and rules to prove given statements. They prove that given lines and angles are similar. This five-page worksheet contains ten problems.
In this geometric proofs worksheet, learners prove supplementary, complimentary, and congruent angles from given models and information. This four-page worksheet contains six multi-step problems.
Show your school spirit while proving theorems about triangles! Your student geometers are charged with coming up with a new design for the school pennant, following specific guidelines. Along the way, they need to prove the theorem that base angles of an isosceles triangle are congruent. Not only is this a learning activity, if you allow time to decorate the pennants, you'll end up with great room or hall decorations. 
Working individually and collaboratively, geometers gain a clear understanding of the Pythagorean theorem. They create, explain, and compare proofs of the theorem. Proofs involve areas of trapezoids, squares, and triangles, congruent triangles, and similar triangles.   
Learners explore trigonometric identities.   In this Algebra II lesson, students use graphing to verify the reciprocal identities.  Using Cabri Jr, learners investigate the Pythagorean trigonometric identities and the geometric c proofs of the identities. 
There are four main topics in this bundle of lesson plans. They don't need to be taught sequentially. Each lesson has three parts: a starter, a main activity, and something to help consolidate and provide reflection on concepts learned.
Students solve proofs dealing with the coordinate plane. In this geometry lesson, students verify properties of triangles and quadrilaterals.
High schoolers explore the locus of midpoint of the hypotenuse of a fixed length geometrically and discover that the median of a right triangle is equal to half the length of the hypotenuse. For this right triangle lesson, students describe and draw a diagram of this problem. High schoolers also state an argument for the solution to the problem.
Tenth graders explore triangle congruence.  In this geometry lesson, 10th graders solve situational problems using their prior knowledge regarding triangle congruence.  Additionally, students explore and conjecture regarding properties of perpendicular and angle bisectors.  TI-nspire handheld and application required.