State if the triangles in the picture are similar, if so how do you know. I need an explanation

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[15 points, algebra 2]simplify the complex fraction and find the restrictions.

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.

This graph shows a portion of an odd function. use the graph to complete the table of values. x f(x) −2 −3 −4 −6