9. a) How many axes of rotation are there in a regular tetrahedron? Use
a diagram to show the axes
b) Describe the turn symmetry for
each axis
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Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

What is the radical expression that is equivalent to the expression 27 1 over 5?

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.