Chapter 6 Geometry Sometimes, Always, Never Practice
An equilateral triangle is similar to a scalene triangle
Never
An obtuse triangle is similar to an acute angle
Never
In Triangle ABC <A=40, AB=6 and BC=8 IN Triangle RST RS= 12, ST= 16 and <R=80; Therefore: ABC~RST
Never
If p:q= r:s then p:s=q:r
Sometimes
If the ratio of the measures of a pair of corresponding sides of two polygons is 3:4, then the ratio of the polygons perimeters is 5:6
Sometimes
If two sides of one triangle are proportional to two sides of another triangle, then the triangles are similar
Sometimes
If two triangles are similar, then they are congruent
Sometimes
Two equilateral polygons are similar
Sometimes
Two rectangles are similar if neither is a square
Sometimes
Two right triangles are similar
Sometimes
For nonzero p, q, r, and s, if p:r= p+q:r+s, then p:q=r:s
Always
If a line intersects a side of a triangle at one of its trisection points and is parallel to a second side, then it intersects the third side at one of its trisection points.
Always
If two triangles are congruent, then they are similar
Always
Two Isosceles triangles are similar if the vertex angle of one is congruent to the vertex angle of the other
Always
Two equilateral triangles are similar
Always
Two isosceles triangles are similar if a base angle of one is congruent to a base angle of another
Always
Two right triangles are similar if the legs of one are proportional to the legs of the other
Always
