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8th Grade Math - Slope in Similar Right Triangles

Updated: Sep 12, 2023

This post explains and give practice opportunities related to TEKS 8.4A:

use similar right triangles to develop an understanding that slope, m, given as the rate comparing the change in y- values to the change in x- values, (y2 - y1 ) / (x2 - x1 ), is the same for any two points (x1 , y1 ) and (x2 , y2 ) on the same line


Students learn how slope remains the same for two similar right triangles that share a hypotenuse with a continuous line.


STAAR Practice

Between 2016 and 2023, this supporting standard has been tested 5 times on the STAAR test. Videos explaining the problems can be found below. If you'd rather take a quiz over these questions, click here. The videos below are linked to the questions in the quiz as answer explanations after the quiz is submitted.


To view all the posts in this 8th grade TEKS review series, click here.

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