4. What type of line of symmetry does this triangle have? horizontal vertical This triangle has no line of symmetry. diagonal​

Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.  

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle