Which of these triangle pairs can be mapped to each other using both a translation and a reflection across the line containing ab?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ab=9, and ac=12, find hc.

50 ! pls ! 12.  building codes regulate the steepness of stairs. homes must have steps that are at least 13 inches wide for each 8 inches that they rise.

a. discuss how to find the slope of the stairs.
b. describe how changing the width or height affects the steepness of the stairs.

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.