Are these triangles similar? If yes, what triangles are similar? * 13 12 6. J' 20 10 O yes - triangle ERP similar to triangle ASJ O yes - triangle SJA similar to triangle REP yes - triangle ASJ similar to triangle ERP not similar P.

a Does the similarity relationship have a reflexive property for triangles and polygons in general? b Is there a symmetric property for the similarity of triangles and polygons? c Is there a transitive property for the similarity of triangles and polygons?

Show that there is no triangle for which a=4 feet, b=14 feet, and A=60.

What type quadrilateral is formed when the midpoints of the sides of an isosceles trapezoid are joined in order.

A triangle is named ABC. Can it also be named ACB? Can it be named BAC?

If 90A180, then A/2 terminates in which quadrant?

Determine the length of A.

A 30-60-90 triangle is inscribed in a circle with a radius of length 5 cm. Find the perimeter of the triangle.