Lesson Plan
Curated OER

Special Angles on Parallel Lines

For Teachers 10th
Tenth graders investigate parallel lines and their special angles cut by a transversal. In this geometry lesson plan, 10th graders identify and find corresponding, alternate interior, and alternate exterior angles formed when parallel...
Lesson Plan
Curated OER

Exploring the Slopes of Parallel and Perpendicular Lines.

For Teachers 8th - 10th
Students find the slopes for perpendicular and parallel lines. In this geometry lesson, students differentiate between parallel and perpendicular lines. They use Cabri software to create lines to compare.
Worksheet
Curated OER

Challenge: Skills and Applications Lesson 3.4

For Students 9th - 10th
In this geometry instructional activity, students identify the missing angles formed by parallel lines and a transversal. They differentiate between parallel and perpendicular lines. There are four questions.
Lesson Plan
Curated OER

Sample Lesson Plan on Lines and Angles

For Teachers 3rd - 5th
Student complete worksheet using the definitions of lines and angle vocabulary. They define the word and follow a direction given on the worksheet such "construct a line." They complete an online tutorial on how to measure angles using a...
Worksheet
Curated OER

Pairs of Lines

For Students 9th - 10th
In this geometry activity, students differentiate between perpendicular and parallel planes and lines. They identify segments that are parallel and perpendicular to sides. There are  22 questions.
Lesson Plan
Curated OER

Points, Lines, and Distance

For Teachers 9th - 12th Standards
Students calculate the distance between two points. In this geometry lesson, students define the meaning of the distance between parallel lines. They find the point of intersection of other lines.
Lesson Plan
Curated OER

Lesson Plan One: Points, Lines, Rays

For Teachers 5th
Fifth graders explore basic geometric terms. Pupils draw a physical picture of a scene that illustrates at least five geometric terms. Partners exchange drawings and locate the illustration of geometric terms in the drawing.
Worksheet
Curated OER

Properties of Angles, Lines, and Triangles

For Students 10th
In this properties of angles, lines and triangles worksheet, 10th graders solve and complete 28 different problems that include determining the measurement of various figures shown. First, they use the geometric properties and theorems...
Lesson Plan
EngageNY

Similarity and the Angle Bisector Theorem

For Teachers 9th - 10th Standards
Identifying and verifying reproducible patterns in mathematics is an essential skill. Mathematicians identify the relationship of sides when an angle is bisected in a triangle. Once the pupils determine the relationship, they prove it to...
Lesson Plan
EngageNY

Construct a Perpendicular Bisector

For Teachers 9th - 10th Standards
How hard can it be to split something in half? Learners investigate how previously learned concepts from angle bisectors can be used to develop ways to construct perpendicular bisectors. The resource also covers constructing a...
Worksheet
Curated OER

Parallel Lines and Triangles

For Students 9th - 12th
In this triangles worksheet, students solve 1 problem of multiple variables within a single picture of various triangles intersecting with a pair of parallel lines.
Lesson Plan
Curated OER

Perpendicular Lines

For Teachers 9th - 10th
Students differentiate between parallel and perpendicular lines. In this geometry lesson, students identify the different angles created by perpendicular lines and parallel lines. They name the angles that are form when parallel lines...
Lesson Plan
Curated OER

Identifying Parallel and Perpendicular Lines

For Teachers 5th - 6th
Students explore basic geometry. In this geometry activity, students study points and lines that exist in flat planes. Students investigate parallel and perpendicular lines.
Worksheet
Curated OER

Parallel Lines

For Students 10th
In this geometry worksheet, 10th graders determine the measures of the angles formed when parallel lines are cut by a transversal.  The two page worksheet contains eleven problems.  Answers are not provided. 
Worksheet
Math Mammoth

Parallel & Perpendicular Lines

For Students 4th
In this geometry learning exercise, 4th graders list the lines that are parallel or perpendicular to each other. Then they mark with one color the line segments that are parallel and another color those that are perpendicular.
Worksheet
Curated OER

Analytic Geometry

For Students 9th
In this analytic geometry activity, 9th graders graph and solve 13 different types of problems that include determining whether equations are linear to matching given equations to their corresponding equation in the second column....
Lesson Plan
Curated OER

Sail Problem

For Teachers 9th - 12th Standards
High schoolers explore the proportional relationships involved in multiple parallel lines being cut by a transverse line. They complete a sail design problem, that involves finding the lengths of pieces of fabric along the edge of a sail...
Lesson Plan
Curated OER

Angle Relationships

For Teachers 10th
Tenth graders explore the angle relationships that exist when two lines intersect. In this geometry lesson, 10th graders estimate the measure of given angles and use their graphing calculator tools. Students use this knowledge to find...
Lesson Plan
Curated OER

Parallel and Perpendicular Line Construction

For Teachers 9th - 11th
In this geometry worksheet, students construct parallel and perpendicular lines given a straight edge and a compass. Their lines pass through a given point. There are 4 questions with an answer key.
Worksheet
Curated OER

Planes and Lines

For Students 9th - 11th
For this geometry worksheet, students identify the plane that passes through a point and define the theorem that represents parallel and perpendicular lines. There is an answer key.
Lesson Plan
Curated OER

Parallel-o-Home

For Teachers 9th - 12th
Students investigate the usage of parallel and perpendicular shapes in the real world. For this geometry lesson, students investigate shapes for properties that are related to the real world. They relate all the properties of shape tot...
Interactive
Curated OER

Proving Lines Parallel Multiple Choice

For Students 10th - 12th
In this geometry worksheet, learners identify parallel lines, examine and interpret diagrams, and find the value of corresponding angles and lines.  This one-page worksheet contains 6 multiple-choice problems.  Answers are...
Assessment
Inside Mathematics

Quadrilaterals

For Teachers 9th - 12th Standards
What figure is formed by connecting the midpoints of the sides of a quadrilateral? The geometry assessment task has class members work through the process of determining the figure inscribed in a quadrilateral. Pupils use geometric...
Unit Plan
EngageNY

Complex Numbers and Transformations

For Teachers 11th - 12th Standards
Your learners combine their knowledge of real and imaginary numbers and matrices in an activity containing thirty lessons, two assessments (mid-module and end module), and their corresponding rubrics. Centered on complex numbers and...