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### We found 96 reviewed resources

Lesson Planet

#### Evaluating Statements About Length and Area

Class members complete an assessment task by identifying whether statements about triangles and quadrilaterals are always true, sometimes true, or never true. They then participate in a sorting activity with the same objective.

Lesson Planet

#### Angles Formed by Transversals of Coplanar Lines

Create a strong understanding of the relationships formed when parallel lines intersect a transversal. Discuss each type of angle pair and their relationship to each other.

Lesson Planet

#### Polygon Angle Sum

Using patterns to build a formula is an important mathematical skill. Pupils discover a formula to find the sum of interior angles in a polygon by analyzing a pattern. The additional videos show how to use the formula to find various...

Lesson Planet

#### Coordinate Proofs

How do you know you know? Prove it! The guide goes through several examples and includes a link to a video to teach learners how to work through coordinate proofs. The goal is to prove that different shapes are indeed that shape.

Lesson Planet

#### Parallel and Perpendicular Lines Worksheet

Take the work out of worksheet and give young mathematicians time to practice with lines, systems of equations, and special lines. It is a great worksheet that includes questions on all the main topics of linear equations.

Lesson Planet

#### Isosceles Triangles and Special Line Segments

Under which conditions can a triangle be classified as isosceles? High schoolers practice identifying isosceles triangles and special line segments, including angle bisectors, medians of triangles, and perpendicular bisectors of sides of...

Lesson Planet

#### Geometry Sample Problems

I'd like to prove that this worksheet has a lot to offer. Seven problems using triangles and parallelograms practice the traditional method of a two-column proof. After the worksheet is some practice problems that show worked out...

Lesson Planet

#### Parallel Lines Proofs Practice

Here is a learning exercise that lines up perfectly with the skills needed to finish a geometric proof. Eleven problems are given to see if learners can prove that lines are parallel or angles are congruent.

EngageNY

#### End-of-Module Assessment Task - Geometry (module 1)

Have you hit a wall when trying to create performance task questions? Several open-ended response questions require a deep level of thinking. Topics include triangle congruence, quadrilaterals, special segments, constructions, and...

EngageNY

#### Review of the Assumptions (part 2)

Is the amount of information getting overwhelming for your geometry classes? Use this strategy as a way to organize information. The resource provides a handout of information studied in relation to triangle congruence. It includes a...

EngageNY

#### Special Lines in Triangles (part 2)

Medians, midsegments, altitudes, oh my! Pupils study the properties of the median of a triangle, initially examining a proof utilizing midsegments to determine the length ratio of a median. They then use the information to find missing...

EngageNY

#### Review of the Assumptions (part 1)

What was the property again? Tired of hearing this from your pupils? Use this table to organize properties studied and as a reference tool for individuals. Learners apply each property in the third column of the table to ensure their...

EngageNY

#### Special Lines in Triangles (part 1)

Allow your pupils to become the mathematicians! Individuals explore the properties of a midsegment of a triangle through construction and measurement. Once they figure out the properties, learners use them to draw conclusions.

EngageNY

#### Properties of Parallelograms

Everyone knows that opposite sides of a parallelogram are congruent, but can you prove it? Challenge pupils to use triangle congruence to prove properties of quadrilaterals. Learners complete formal two-column proofs before moving on to...

EngageNY

#### Mid-Module Assessment Task - Geometry (Module 1)

How do you prepare class members for the analytical thinking they will need in the real world? An assessment requires the higher order thinking they need to be successful. The module focuses on the concept of rigid transformations...

EngageNY

#### Unknown Angle Proofs—Proofs of Known Facts

Lead the class in a Greek history lesson plan with a geometric twist. Pupils relate a short video about geometric properties to modern-day methods of solving for unknown angles. They discuss parallel line theorems and complete practice...

EngageNY

#### Unknown Angle Proofs—Proofs with Constructions

Provide your emerging mathematicians with the tools to learn as they incorporate auxiliary lines to solve unknown angle proofs in this continuing segment. They decipher information from a diagram to uncover the missing pieces and...

EngageNY

#### Unknown Angle Proofs—Writing Proofs

What do Sherlock Holmes and geometry have in common? Why, it is a matter of deductive reasoning as the class learns how to justify each step of a problem. Pupils then present a known fact to ensure that their decision is correct.

EngageNY

#### Solve for Unknown Angles—Angles in a Triangle

Assist your class with each angle of geometry as they use exterior angles to form linear pairs with adjacent interior angles. They cover multiple vocabulary terms and work practice problems, complete with justifications, before taking an...

EngageNY

#### Solve for Unknown Angles—Transversals

Lead your class on an exciting journey through the world of math as they review geometry facts and solve for unknown angles. They learn how to use auxiliary lines and congruent angles to correctly complete each practice problem...

EngageNY

#### Solve for Unknown Angles—Angles and Lines at a Point

How do you solve for an unknown angle? In this sixth installment of a 36-part series, young mathematicians use concepts learned in middle school geometry to set up and solve linear equations to find angle measures.

Lesson Planet

#### Postulates and Proofs: Let's take it to the courtroom!

Order in the court! Turn your geometry classroom into a courtroom and have your pupils defend their proofs. A fun and educational lesson allows both individual and group work with geometric proofs and group presentations in a court of...

Lesson Planet

#### Analytic Geometry Study Guide

Are you looking for a comprehensive review that addresses the Common Core standards for geometry? This is it! Instruction and practice problems built specifically for standards are included. The material includes geometry topics from...

Lesson Planet

#### Company Logo

Modern advertising takes a geometric turn with this unit. The final assessment activity leads pupils through the logical analysis of a fictional logo, including the development of a paragraph proof. The wealth of resources leading up to...