Curated OER
Tricky Triangle
In this triangle worksheet, students solve 1 word problem about the lengths of a triangle. Students determine the length of the longest side given the ratio of the angle measures.
Curated OER
Side Lengths of Similar Shapes
In this side lengths worksheet, students determine the value of x in 4 pairs of shapes. A reference web site is given for additional activities.
Texas Instruments
Texas Instruments: Mc Dougal Littell Geometry: Investigate Proportionality
Students can use the TI-84 Plus family with Cabri Jr. to segment lengths in a triangle.
Texas Instruments
Texas Instruments: Right Triangles Are Cool Because of Pythag's Rule
In this activity, students use the Geoboard to determine the length of the sides of a right triangles. [Requires Adobe Reader.]
Khan Academy
Khan Academy: Compare Shapes
Practice comparing shapes based on their number of sides, number of corners, and side-lengths. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Texas Instruments
Texas Instruments: Similar Triangles and Proportions
In this activity, students will investigate the relationship among the similar triangles formed when a segment is constructed parallel to one side of a triangle. They will explore the various ratios that exist between the lengths of the...
Khan Academy
Khan Academy: Find Perimeter When Given Side Lengths
Find perimeter of figures when given an image or context. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints. CCSS.Math.Content.3.MD.D.8 Solve real world and...
Khan Academy
Khan Academy: Volume
Students attempt practice problems regarding volume of rectangular prisms. Students are attempting to get five consecutive questions correct. Questions include finding the volume of a rectangular prism and finding a missing side length...