Worksheet
Curated OER

Geometry, Word Search Puzzle

For Teachers 6th - 8th
In this math worksheet, learners look for the words that are related to the math words used in the practice of geometry. They also practice spelling.
Lesson Plan
Curated OER

Points, Lines, Planes, and Space

For Teachers 9th - 12th
In this points, lines, planes, and space worksheet, students solve word problems dealing with points, lines, planes, and space. Students complete 20 individual problems and 20 group problems.
Worksheet
Curated OER

Circles and Cylinders

For Students 10th
For this geometry lesson, 10th graders break down a circle and identify the different parts. They discuss chords, diameter, radius, circumference, major and minor segment. There are 42 problems broken down into 5 different sections.
Worksheet
Curated OER

Regents Exam Questions G.G.21: Centroid, Orthocenter, Incenter, and Circumcenter

For Students 9th - 12th
In this triangles worksheet, high schoolers solve 4 multiple choice problems. Students find the centroid, orthocenter, incenter, and circumcenter or various triangles.
Lesson Plan
Curated OER

Measurement

For Teachers 5th
Fifth graders measure specified distances when given perpendicular lines. In this measurement lesson plan, 5th graders draw the lines themselves.
Lesson Plan
Curated OER

Dividing Line Segments into n Congruent Parts

For Teachers 9th - 10th
Young scholars identify lines, and line segments. In this geometry lesson, students divide line segments into equal congruent parts. They complete a laboratory activity dealing with lines and segments.
Lesson Plan
Curated OER

Polygons All Around Us!

For Teachers 9th - 12th
Young scholars explore the concept of polygon properties. In this polygon properties lesson, students draw polygons with different numbers of sides such as pentagons, octagons, hexagons, etc. Young scholars identify different geometric...
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Co Angle Bisection and Midpoints of Line Segments

For Teachers 9th - 10th Standards
This task provides a construction of the angle bisector of an angle by reducing it to the bisection of an angle to finding the midpoint of a line segment. Aligns with G-CO.D.12.
Handout
Sonoma State University

Sonoma State University: Angle Bisector

For Students 9th - 10th Standards
This site offers an explanation with words and pictures on how to bisect an angle using a compass and straightedge.
Activity
Oswego City School District

Regents Exam Prep Center: Bisect a Line Segment and an Angle

For Students 3rd - 8th Standards
This step-by-step tutorial teaches students how to construct a bisector of a segment and the bisector of an angle.
eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 5.2 Bisectors of Line Segments and Angles

For Students 9th - 10th Standards
Learn how to construct bisectors of line segments and angles.
Interactive
National Council of Teachers of Mathematics

Nctm: Illuminations: Angle Bisector

For Students 9th - 10th Standards
This interactive demonstrates how to bisect an angle.
Unknown Type
McGraw Hill

Glencoe: Self Check Quizzes 1 Bisectors

For Students 9th - 10th
Use Glencoe's randomly generated self-checking quiz to test your knowledge of bisectors. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the "Check It" button and the...
Activity
Texas Instruments

Texas Instruments: Perpendicular Bisector of a Line Segment

For Teachers 9th - 10th Standards
Students learn to draw a segment and its perpendicular bisector. They understand right angles and congruent segments. Students observe that changing the length or orientation of the segment changes the perpendicular bisector.
Activity
Other

Advogato: Trigonometry by Geometric Construction

For Students 9th - 10th Standards
This site from Advogato is all about angles. It contains information starting with what an angle is and what it looks like, all the way up to bisecting angles and theorems about angles. This is very good information for students just...
Whiteboard
ClassFlow

Class Flow: Bisecting Angles

For Teachers 3rd - 5th Standards
[Free Registration/Login Required] Sunshine State Standard: MA.C.3.3.1-1 You can bisect an angle by using a compass and a straight edge. This flipchart goes over definitions and the mathematical process of bisecting angles in a step by...
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: g.co Bisecting an Angle

For Teachers 9th - 10th Standards
In this task, students practice bisecting an angle. Includes a GeoGebra worksheet that teachers can use to demonstrate the task. Aligns with G-CO.D.12.
Activity
BBC

Bbc: Ks3 Bitesize: Constructions and Locus

For Students 9th - 10th
This BBC Bitesize focuses on constructions and locus. To understand this activity, you must already know how to define perpendicular, bisect, and locus.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Midpoints and Segment Bisectors

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Apply the definitions of midpoint, segment bisector, and angle bisector.
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Graphing Calculator Practice: Polygons and Area of Plane Figures

For Students 9th - 10th Standards
Practice using your graphing calculator for measuring and constructing polygons and other plane figures. If you get stumped or if you would like to check your work, then select the View Solution button, which is located directly under...
Activity
Texas Instruments

Texas Instruments: Inscribing a Circle in a Triangle

For Teachers 9th - 10th
In this activity, students bisect the angles of a triangle and find the incenter of the triangle. They find the distance from the incenter to the side of the triangle and use it as radius. With the incenter as the center, they inscribe a...
Activity
Texas Instruments

Texas Instruments: Triangle Properties Assessment

For Teachers 9th - 10th
This activity uses Cabri Jr. to assess the students' knowledge of various segments related to triangles: perpendicular bisector, median, angle bisector, midsegment, and altitude.

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