Tim has a box of 15markers he gives three markers to four friends what exppresion can show the number of marker tim has left

How does reflecting or rotating a figure change the interior angles of the figure?

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.

At a local museum, the total price for one adult and one child is $11. mrs. smith paid for herself and her three children. she spent $19. record the system of equations to be solved and then find the price of an adult and child ticket using either elimination or substitution.