Curated OER
Midsegments of a Triangle
Learners analyze midsegments of triangles in this instructional activity. They use Cabri Jr. software to observe the relationships between interior angles and midsegments of triangles. Specific instructions for creating this...
Curated OER
Perimeter
In this perimeter activity, 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 the...
Texas Instruments
Texas Instruments: Midsegment of a Triangle
Students explore the properties of triangles formed by connecting the midpoints of two sides of a triangle, and examine the relationship between the two triangles. They study the Triangle Midsegment theorem. [Requires Adobe Reader.]
Texas Instruments
Texas Instruments: Investigating Lengths of Segments in a Triangle
In this activity, students connect the midpoints of two sides of a triangle, to draw the midsegment of the triangle. They investigate how the length of this segment relates to the third side of the triangle. [Requires Adobe Reader.]
CK-12 Foundation
Ck 12: Geometry: Trapezoids Grades 9 10
[Free Registration/Login may be required to access all resource tools.] This concept will teach students to use and apply the properties of trapezoids.
CK-12 Foundation
Ck 12: Geometry: Triangle Proportionality Grades 9 10
[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.
CK-12 Foundation
Ck 12: Midsegment Theorem
[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.
Math Open Reference
Math Open Reference: Triangles
A complete reference guide to types of triangles and triangle perimeter and area. It provides definitions and interactive animated activities that enhance further explanation.
CK-12 Foundation
Ck 12: Geometry: Midsegment Theorem
[Free Registration/Login may be required to access all resource tools.] This concept teaches students the midsegment theorem and how to apply it.
CK-12 Foundation
Ck 12: Geometry: Midsegment Theorem
[Free Registration/Login may be required to access all resource tools.] Apply the Midsegment Theorem.
CK-12 Foundation
Ck 12: Geometry: Triangle Proportionality Grades 8 10
[Free Registration/Login may be required to access all resource tools.] Use the Triangle Proportionality Theorem and its converse.
Math Open Reference
Math Open Reference: Median of a Trapezoid
Learn about the median of a trapezoid with this helpful reference tool. Provides a detailed definition, examples, and an interactive activity that enhances further explanation. Includes links to related topics.