Similar Triangles - Geometry Exploration
Eighth graders become engaged in a lesson in geometry to improve mathematical skills. They construct triangles, segments, and points using Geometer's Sketchpad to demonstrate how dilations of triangles and rectangles change geometric objects.
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Mathematics Within: Slope and Triangles
Learners discover a method for determining the slope of a line by creating and comparing similar triangles. They fold coordinate grids to make three similar triangles then measure the sides to compare the relationships between the...
8th - 10th Math CCSS: Adaptable
Informal Proof of AA Criterion for Similarity
What does it take to show two triangles are similar? The 11th segment in a series of 16 introduces the AA Criterion for Similarity. A discussion provides an informal proof of the theorem. Exercises and problems require scholars to apply...
8th Math CCSS: Designed
New Review Inscribed Similar Triangles: Lesson
Create similar triangles with a little altitude. A section of an extensive playlist on basic geometry discusses how an altitude of a right triangle creates similar triangles. Using the theorem, the presentation finds unknown side...
4 mins 6th - 12th Math CCSS: Adaptable
Identifying Similar Triangles
Math whizzes work with angle sums and exterior angles to figure out the measure of other angles. This particular publication provides comprehensive support in the form of an anticipatory activity, questions designed to prompt discussion,...
7th - 9th Math CCSS: Designed
New Review Falling Down a Rabbit Hole Can Lead to a King-sized Experience - Exploring Similar Figures Using Proportions
Just a sip will make things smaller. Using Alice’s Adventures in Wonderland as a hook, the lesson introduces the idea of similarity. Pupils use it to find the distances on a map by applying the scale factor and creating similar triangles.
7th - 12th Math CCSS: Designed