Restate the question: triangle QRS is similar to triangle DEF .....
(If this isn't your question, then change the wording and ask it again)
Then (QR/DE) = (RS/EF) = (SQ/FD)
You divide a length of one polygon by the corresponding length in the other polygon. Any length will do, as long as you use the corresponding length in both.
SSS - Side-Side-SideAll three corresponding sides of the triangles have the same length AAS - Angle-Angle-Side; ASA - Angle-Side-AngleTwo corresponding angles are equal and a corresponding side is equal SAS - Side-Angle-SideTwo corresponding sides have the same length and the enclosed angle is the same. Note: it is important that the angle is the one between the corresponding sides of equal length.RHS - Right_angle-Hypotenuse-SideIn a right angled triangle the hypotenuse and a corresponding side must be equal.
It is the same length as the corresponding side on the other triangle.
The noun form for the adjective long is longness.A related noun is length.
cm is not a unit of area, it is a unit of length. If you mean cm2, choose any measure (in cm) for the length, then divide 25 by that length to obtain the corresponding width.
You divide a length of one polygon by the corresponding length in the other polygon. Any length will do, as long as you use the corresponding length in both.
Corresponding sides are sides that have the exact same length.
Equal to the length of the radius.
About 1:1 sounds appropriate.
An arc can be measured either in degree or in unit length. An arc is a portion of the circumference of the circle which is determined by the size of its corresponding central angle. We create a proportion that compares the arc to the whole circle first in degree measure and then in unit length. (measure of central angle/360 degrees) = (arc length/circumference) arc length = (measure of central angle/360 degrees)(circumference) But, maybe the angle that determines the arc in your problem is not a central angle. In such a case, find the arc measure in degree, and then write the proportion to find the arc length.
Of the same length.
EXTENDED - increased in length, size or duration (also, outstretched)
angles
proportional
The scale.
The scale factor.
When two sides of a figure are equal in length (measure). For example in a square all sides are equal in length so they're all corresponding measurements.