Curated OER
Concurrent Lines in Triangles
Students explore the concept of concurrent lines in triangles. In this concurrent lines in triangles lesson, students work in groups to investigate properties of concurrent lines in acute, right, and obtuse triangles. Students use a...
Curated OER
Concurrent Lines, Medians and Altitudes
In this geometry learning exercise, students construct angles and identify medians and altitudes. They use a compass and protractor to perform heir construction. There are 28 questions.
Curated OER
Incenter of a Triangle
Tenth graders find the incenter of a triangle. In this geometry lesson, 10th graders define the way to create an incenter with an angle bisector. They differentiate between incenter and incircle.
Curated OER
Analytic Geometry-Good Problems from Alex Pintilie
In this analytic geometry worksheet, students solve 12 word problems. Problems cover identifying the locus of an equation as well as the locus.
Curated OER
Quadratic and Linear Functions
In this Algebra II worksheet, 11th graders review and apply the basic concepts for solving linear and quadratic equation. The one page worksheet contains twelve problems. Solutions are not provided.
Curated OER
Properties of Quadrilaterals
In this properties of quadrilaterals worksheet, students use the properties of quadrilaterals to find the perimeter, angle measurement or length of a missing side of a given polygon. Examples and explanations of the properties are...
Curated OER
Regents Exam Questions G.G.21: Centroid, Orthocenter, Incenter, and Circumcenter
In this triangles worksheet, learners solve 4 multiple choice problems. Students find the centroid, orthocenter, incenter, and circumcenter or various triangles.
Curated OER
Exercise 23--the Regular Pentagon on a Given Side
Learners examine and study how to recognize the characteristics of a regular pentagon and demonstrate how to construct one. They become aware of associating a regular pentagon to its term of a double map and practice the concept of line...
Curated OER
Polygons All Around Us!
Students 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. Students identify different geometric shapes in the...
Curated OER
Quadrilateral Explorations
In this geometry worksheet, 9th graders classify quadrilaterals by using coordinate geometry and the properties of various quadrilaterals. The seven page worksheet contains eleven questions. Answers are...
Curated OER
Diagonals of Quadrilaterals
Students find the diagonals of the quadrilaterals. In this geometry lesson plan, students identify and use properties of quadrilaterals. They define different parts of a quadrilateral shape.
Curated OER
Diagonals to Quadrilaterals II
Learners identify the properties of different polygons. In this geometry lesson, students find the slope of a line and calculate the distance between two lines. They differentiate between similar and congruent polygons.
Curated OER
Geometry, Word Search Puzzle
In this math worksheet, students look for the words that are related to the math words used in the practice of geometry. They also practice spelling.
Wolfram Research
Wolfram Math World: Perpendicular Bisector
MathWorld's definition of a perpendicular bisector, with illustrations to show the different uses of the perpendicular bisector.
Texas Instruments
Texas Instruments: Perpendicular Bisector of a Line Segment
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.
Illustrative Mathematics
Illustrative Mathematics: G Co Construction of Perpendicular Bisector
A and B are two distinct points in the plane and line AB is the segment joining them. The goal of this problem is to construct the perpendicular bisector of segment AB. Aligns with G-CO.D.12.
Math Open Reference
Math Open Reference: Perpendicular Bisector
Learn about the perpendicular bisector with this handy reference guide. Provides a detailed definition, examples, and an interactive activity that enhances further explanation.
Texas Instruments
Texas Instruments: Points on the Perpendicular Bisector of a Segment
In this activity, students use the drawing and measurement tools of Cabri Jr., to learn and understand the concept of "equidistant from the endpoints of a segment." They observe the changes if they move a point on the perpendicular...
Texas Instruments
Texas Instruments: Investigate Perpendicular Bisector
Student activity: Discover that any point on the perpendicular bisector of a segment is equidistant from the endpoints of the segment.
Analyze Math
Analyze Math: Perpendicular Bisector
Learners explore the definitions and properties of the perpendicular bisector. The interactive activity includes an applet to explore the properties of the perpendicular bisector.
CK-12 Foundation
Ck 12: Geometry: Perpendicular Bisectors
[Free Registration/Login may be required to access all resource tools.] Apply perpendicular bisector properties.
CK-12 Foundation
Ck 12: Geometry: Perpendicular Bisectors
[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to construct perpendicular bisectors and use the Perpendicular Bisector Theorem.
Mocomi & Anibrain Digital Technologies
Mocomi: Perpendicular Bisector: Definition & Theorem
Explains how to draw a perpendicular bisector and provides a definition of the perpendicular bisector theorem.
Texas Instruments
Texas Instruments: Cabri Jr. Perpendicular Bisector of a Circle
This activity uses Cabri Jr. to discover that the perpendicular of a chord passes through the centre of a circle. Microsoft Word documents are attached to support the lesson.
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