# Angle Bisector Teacher Resources

Find Angle Bisector lesson plans and worksheets
Showing 103 resources
29 Items in Unit
Lesson Planet Curated

#### Geometry Unit 1: Tools for Geometry

For Teachers 9th - 12th Standards
Six resources make up the first unit in the Flipped-Mastery series for geometry. In the first lesson, scholars learn how to identify and name points, lines, and planes. They work with four postulates, then practice the skills for naming...
12 Items in Course
Lesson Planet Curated

#### Flipped Math: Geometry

For Students 9th - 12th Standards
Imagine taking a complete geometry course remotely! Eleven units make up the My Geometry course. Each unit follows the Flipped-Mastery cycle of learning, divided into two semesters. Pupils watch and take notes on a video that details the...
Instructional Video4:04
CK-12 Foundation

#### Angle Bisectors: Lesson

For Students 8th - 11th Standards
Apply bisectors and distances to angles. Using the definition of an angle bisector, a portion of a geometry playlist draws a diagram showing the angle bisector. The video details properties of an angle bisector and their converses....
Instructional Video2:43
CK-12 Foundation

#### Proportions with Angle Bisectors: Lesson

For Students 8th - 11th Standards
Half at one end becomes proportional on the other. As part of a basic geometry playlist, the video introduces the Angle Bisector Theorem. The presentation uses the theorem to find missing lengths in triangles.
Lesson Plan
Curated OER

#### Geometry/Math A Regents Questions: Angle Bisectors

For Teachers 9th - 12th
For this angle bisector worksheet, students solve five short answer and multiple choice problems. Students construct angle bisectors using a compass.
Instructional Video2:06
Corbett Maths

#### Angle Bisector

For Students 8th - 11th Standards
Cut it in half with a compass and straightedge! Using construction tools, a video shows how to create an angle bisector. The presenter points out what it means to bisect an angle in terms of the measure and distances from the sides of...
Interactive
CK-12 Foundation

#### Congruent Angles and Angle Bisectors: Bisecting Pepperoni Pizza

For Students 9th - 12th Standards
Who doesn't like pizza?  A creative lesson uses a piece of pizza to explore angle bisectors and congruent angles. Young scholars work through a simulation to create congruent slices of pizza by analyzing an angle bisector. They then...
Lesson Plan
Curated OER

#### Angle Bisectors and Medians of Quadrilaterals

For Teachers 9th - 12th Standards
Young scholars investigate the properties of quadrilaterals formed by angle bisectors of a given quadrilateral and quadrilaterals formed by the medians of quadrilaterals. This Cabri Jr. lesson provides opportunity for conjecture and...
Worksheet
Curated OER

#### Angle Bisectors

For Students 10th
For this angle bisector worksheet, 10th graders solve and complete 23 various types of geometry problems. First, they find the angles listed in the figure shown. Then, students determine the sum of the interior angles of a polygon. They...
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...
Activity
Illustrative Mathematics

#### Find the Angle

For Teachers 7th - 10th Standards
This a fun problem for young geometers to play with while gaining important insight into deductive reasoning. Some will find the answers very quickly, others might take a less direct path, but all will use their knowledge of the sum of...
Lesson Plan
Curated OER

#### Altitude, Median, and Angle Bisector of a Triangle

For Teachers 9th - 12th Standards
Learners investigate the special properties of an altitude, a median, and an angle bisector and explore how these special segments divide the area of a triangle. The dynamic nature of Cabri Jr. allows pupils to form and verify conjectures.
Lesson Plan
Curated OER

#### Perpendicular and Angle Bisectors

For Teachers 10th
In this geometry worksheet, 10th graders solve problems that are based on the theorems associated with perpendicular and angle bisectors of a triangle.  An application on the coordinate plane is included.  The one page worksheet contains...
Lesson Plan
Curated OER

#### Construction: Angle Bisector

For Teachers 9th - 12th
In this geometry worksheet, students construct angle bisectors of two provided rays using a straightedge and a compass. There are 6 questions.
Lesson Plan
Curated OER

#### Angle Bisectors

For Teachers 9th - 12th
Students identify different angles. For this geometry lesson, students identify different properties of triangles. They find the altitude, median and angle bisector.
Worksheet
Curated OER

#### Angle Bisectors

For Students 10th
In this angle bisectors instructional activity, 10th graders solve and complete 12 different problems. First, they find the value of xand the measure of the indicated angles for each situation. Then, students find the values of each...
Instructional Video17:08
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Flipped Math

#### Measuring Angles

For Students 9th - 12th Standards
An informative presentation shows pupils how to name and measure angles. Scholars revisit the different types of angles and their definitions and use their knowledge of what an angle bisector is to solve algebraic problems. At the end,...
Lesson Plan
Curated OER

#### Indirectly Direct

For Teachers 4th - 8th
Students use prior knowledge of angle and lines as they conduct an experiment with a rolling marble to determine the shape of a mystery object located under a metal pie tin.
Lesson Plan
EngageNY

#### Tangent Segments

For Teachers 9th - 12th Standards
What's so special about tangents? Learners first explore how if a circle is tangent to both rays of an angle, then its center is on the angle bisector. They then complete a set of exercises designed to explore further properties and...
Worksheet
Mt. San Antonio Collage

#### Isosceles Triangles and Special Line Segments

For Students 9th - 12th Standards
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 Plan
EngageNY

#### Points of Concurrencies

For Teachers 9th - 10th Standards
You say that perpendicular bisectors intersect at a point? I concur! Learners investigate points of concurrencies, specifically, circumcenters and incenters, by constructing perpendicular and angle bisectors of various triangles.
Worksheet
Curated OER

#### Chapter 5 Final Review Extra Problems. Triangles

For Students 10th - 12th
In this triangles worksheet, students identify the median, altitude, segment, angle bisector, perpendicular bisector and triangle midsegment of triangles.  They find the perimeter of triangles.  This three-page worksheet contains 8...
Worksheet
Curated OER

#### Angle Bisector

For Students 10th
In this geometry instructional activity, 10th graders use a straightedge and a compass to construct the bisector of a given angle.  The one page instructional activity contains two problems.  Answers are provided.
Interactive
CK-12 Foundation

#### Bisectors of Line Segments and Angles: Cut an Angle

For Students 6th - 10th
Explore constructions through an interactive online lesson. Given an example of an angle bisector construction, learners investigate the markings to determine the method used. Challenge questions help solidify the steps.