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### We found 73 resources with the concept angle bisectors

Videos (Over 2 Million Educational Videos Available)

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Three-Dimensional Coordinates and the...

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Other Resource Types
(73)

EngageNY

#### EngageNY Geometry Module 2: Similarity, Proof, and Trigonometry

The Geometry Module 2: Similarity, Proof, and Trigonometry collection includes 36 lessons that are divided into five topics: Scale Drawings, Dilations, Similarity and Dilations, Applying Similarity to Right Triangles, and Trigonometry....

Lesson Planet

#### EngageNY Geometry Module 1: Congruence, Proof, and Constructions

The 36 lessons in the Geometry Module 1 collection address transformations in teaching geometry brought on by Common Core. The focus here is on transformations and the relationships between transformations and congruence. Teacher...

Lesson Planet

#### Measurement: Distance Relations

Never miss a centimeter with a set of measurement lessons and activities, focusing on area and perimeter. From practice sheets to collaborative games, your high schoolers will love geometry!

Lesson Planet

#### Indirectly Direct

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 Planet

#### Loci and Constructions

A General Certificate of Secondary Education math review has class members make basic constructions. Using a protractor and a ruler along with a compass, pupils develop drawings of triangles with given measurements. Scholars use their...

Lesson Planet

#### Loci Part 1

Where can it go? The first video on loci develops a definition and provides some quick sketches of the loci of all points with given characteristics. The presenter does an example of the loci of points a given distance from an L shape.

Lesson Planet

#### Loci Part 2

Closer to this point and farther from that one. Continuing with loci problems, a short video shows how to work problems that are not straightforward. The presenter works loci problems that result in a region that meets several criteria.

Lesson Planet

#### Construct a 30 Degree Angle

Split it down the middle. Using the tools of geometric construction, the video shows two different methods of constructing a 30-degree angle. The first method bisects an angle of an equilateral triangle. The second uses the diagonal of a...

Lesson Planet

#### Angle Bisector

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...

Lesson Planet

#### Detective Stories

The truth will always come out. A short performance task has learners considering a witness statement given to a detective. They apply special line segments in triangles and Ceva's Theorem to prove that the witness is actually lying.

Lesson Planet

#### Module 3: Geometric Figures

It's just not enough to know that something is true. Part of a MVP Geometry unit teaches young mathematicians how to write flow proofs and two-column proofs for conjectures involving lines, angles, and triangles.

Lesson Planet

#### In Oz We Tryst

The shortest distance from point A to point B is a straight line, but measuring distance gets more complicated when there are three points! Given the location of three friends, individuals determine the best point for all three friends...

Lesson Planet

#### Always, Sometimes, Never

Do your learners always, sometimes, or never remember the properties of the segments in triangles? Get that number closer to always with a creative lesson analyzing all four segments. Scholars consider a statement about one of the...

Lesson Planet

#### Proportions with Angle Bisectors: Lesson

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 Planet

#### Angle Bisectors: Lesson

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....

Lesson Planet

#### Isosceles Triangles: Lesson

Two sides give us two angles. A segment of a playlist on basic geometry revisits isosceles triangles. The presentation explains several properties and theorems related to isosceles triangles.

Lesson Planet

#### Congruent Angles and Bisectors: Lesson

How is congruence shown? Using angles, the resource introduces the congruence symbol and explains the meaning of being congruent. A segment of a larger playlist on basic geometry discusses bisection as a way to arrive at two congruent...

Lesson Planet

#### Determination of the Optimal Point

Meet at the Fermat-Torricelli point. Individuals determine the optimal location of a facility given criteria. This means they must consider points of concurrency in a triangle, including the centroid, the incenter, the circumcenter, the...

Lesson Planet

#### Copying and Bisecting an Angle

Take one angle and get two. The presentation provides the steps required to copy and bisect an angle. Pupils follow the steps to create the two constructions. They create their own foldable to keep track of the steps for each construction.

Lesson Planet

#### Constructing an Angle Bisector

Demonstrate the angle bisector construction using both teacher-led and student-led guided practice. Scholars learn the process and practice the construction multiple ways. They verify their work with protractors and patty paper.

Lesson Planet

#### Bisecting Angles and Line Segments

Divide figures in two using basic construction tools. A lesson plan introduces the steps to conduct two basic constructions. Using a straightedge and a compass, pupils bisect angles and create the perpendicular bisector of a line...

Lesson Planet

#### Prove Rhombus Diagonals Bisect Angles

What do congruent triangles have to do with diagonals of a rhombus? Given a rhombus, pupils develop a proof showing that a diagonal bisects opposite angles. The learners use what they know about congruent triangles to create the...

Lesson Planet

#### Bisectors of Line Segments and Angles: Cut a Line

Geometric constructions build relationships —by simply manipulating simple tools. An interactive lesson presents a completed construction of a segment bisector and has learners analyze the important aspects. Ultimately, they should be...

Lesson Planet

#### Inscribed Circle Construction

Given a triangle, pupils construct a circle inscribed in the triangle. The scholars must determine what center of the circle to use and make the appropriate constructions to find it.