Worksheet
Curated OER

The Triangle Midsegment Theorem

For Students 10th
In this geometry worksheet, 10th graders identify the vocabulary associated with the Triangle Midsegment Theorem and solve problems in which they find the size of a missing angle or segment.  The one page worksheet contains nineteen...
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...
Lesson Plan
Curated OER

Triangle Midsegment

For Teachers 9th - 12th Standards
Learn how to calculate the length and midsegments of triangles. Students differentiate between similar and congruent triangles. They create a spreadsheet with their findings.
Lesson Plan
EngageNY

Special Lines in Triangles (part 1)

For Students 9th - 10th Standards
Allow your pupils to become the mathematicians! Individuals explore the properties of a midsegment of a triangle through construction and measurement. Once they figure out the properties, learners use them to draw conclusions.
Lesson Plan
EngageNY

Special Lines in Triangles (part 2)

For Teachers 9th - 10th Standards
Medians, midsegments, altitudes, oh my! Pupils study the properties of the median of a triangle, initially examining a proof utilizing midsegments to determine the length ratio of a median. They then use the information to find missing...
Lesson Plan
Illustrative Mathematics

Joining Two Midpoints of Sides of a Triangle

For Teachers 9th - 11th Standards
Without ever using the actual term, this exercise has the learner develop the key properties of the midsegment of a triangle. This task leads the class to discover a proof of similar triangles using the properties of parallel...
Lesson Plan
Curated OER

Midsegments of a Triangle

For Teachers 9th - 12th Standards
Students analyze midsegments of triangles in this lesson. They use Cabri Jr. software to observe the relationships between interior angles and midsegments of triangles. Specific instructions for creating this lesson in Cabri Jr. are...
Lesson Plan
Curated OER

Investigating Segments in a Triangle

For Teachers 9th - 12th Standards
Pupils investigate segments in a triangle by constructing a triangle using Cabri Jr. They construct segments within the triangle that lie on the midpoints of the triangle's sides. Learners then compare the slope of base of the triangle...
Lesson Plan
Curated OER

Midsegments of Quadrilaterals

For Teachers 9th - 12th Standards
High schoolers explore the concept of quadrilaterals as they find the midsegments of quadrilaterals using Cabri Jr. on a graphing calculator. They find midpoints, slopes, angles, and distances of lines and angles.
Lesson Plan
Curated OER

Investigating Lengths of Segments in a Triangle

For Teachers 9th - 12th Standards
Pupils explore the midsegment of a triangle in the geometry instructional activity. They draw and measure the segment joining the midpoints of the two sides of a triangle and compare its length to the length of the third side of the...
Lesson Plan
Curated OER

Special Segments in a Triangle

For Teachers 10th
In this geometry worksheet, 10th graders review the vocabulary associated with the special segments of a triangle and the associated points of concurrency and solve problems in which they find the indicated missing angle or...
Worksheet
Curated OER

Value of Triangles

For Students 9th - 10th
In this geometry worksheet, students identify the missing sides and angles of triangles. They find the midsegment of each triangle. There are nine questions with an answer key.
Lesson Plan
Curated OER

Constructing Midsegments of Triangles

For Teachers 9th - 10th
Students construct midsegments. In this geometry lesson, students make conjectures and apply properties of triangles to solve problems. They complete an activity on the computer.
Worksheet
Curated OER

Perimeter

For Students 10th
In this perimeter worksheet, 10th graders solve and complete nineteen various geometry problems. First, they find the length of given segments in addition to the perimeter of a kite. Then, students find the value of a variable so that...
Worksheet
Curated OER

Construct, Bisect, Duplicate: Geometry Practice with Compass and Straight Edge

For Students 9th - 12th
Geometers employ a straight edge and compass to duplicate and bisect segments and angles, construct perpendiculars, parallel lines, figures, and circles with points of concurrency. Ample practice with 65 questions across 8 worksheets. No...
Lesson Plan
Curated OER

Pyramids

For Teachers 10th
In this Geometry worksheet, 10th graders solve problems involving the properties of a regular pyramid.  The two page worksheet contains a combination of seven multiple choice and free response questions.  Answers are...
Unit Plan
Cuemath

Cuemath: Midsegment of a Triangle

For Students 9th - 10th Standards
This mini-lesson explores the world of the midsegment of a triangle by finding the answers to questions like what is midsegment of a triangle, triangle midsegment theorem, and proof with the help of interactive questions.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Triangle Proportionality Grades 9 10

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to determine if lines in triangles are parallel and find missing lengths using the Triangle Proportionality Theorem.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Triangle Proportionality Grades 8 10

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Use the Triangle Proportionality Theorem and its converse.
eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 4.4 Theorems About Triangles

For Students 9th - 10th Standards
Discover some theorems about triangles.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Midsegment Theorem

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] This concept teaches students the midsegment theorem and how to apply it.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Midsegment Theorem

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Apply the Midsegment Theorem.
Handout
CK-12 Foundation

Ck 12: Geometry: Bisectors, Medians, Altitudes Study Guide

For Students 9th - 10th
This study guide on bisectors, medians, and altitudes covers key vocabulary, different theorems, and facts about the altitude and triangles. It is available for download with free registration.
Interactive
CK-12 Foundation

Ck 12: Midsegment Theorem

For Students 7th - 9th
[Free Registration/Login Required] Students will explore the midsegment theorem with the interactive triangle. Click learn more to watch a video and click challenge me to answer a practice question.