Similar Triangles Worksheet

Grades K-8 Worksheets

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Identifying Triangles, Quadrilaterals, Pentagons, Hexagons, and Cubes Worksheets
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Use your understanding of similarity of triangles to complete the sentences and calculate the dimensions for the pairs of similar triangles below. For help, see Similar Triangles and Other Shapes.
two similar triangles

∠ABC corresponds to ∠DEF

∠BCA corresponds to ∠EFD

∠CAB corresponds to ∠FDE


two similar traingles with one rotated and dilated.

∠ KLM = 110°

∠ LMK = 25°

∠ MKL = 45°

two similar triangles with dimensions shown

y = 6.5

x = 2.5

z = 6.67
two similar triangles with adjacents sides and dimensions shown

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Related Resources

The various resources listed below are aligned to the same standard, (8G04) taken from the CCSM (Common Core Standards For Mathematics) as the Geometry Worksheet shown above.

Understand that a two-dimensional figure is similar to another if the second can be obtained from the first by a sequence of rotations, reflections, translations, and dilations; given two similar two-dimensional figures, describe a sequence that exhibits the similarity between them.


Similarity, Congruence and Transformations


Shapes and Figures

Similarity, Congruence and Transformations

Similar to the above listing, the resources below are aligned to related standards in the Common Core For Mathematics that together support the following learning outcome:

Understand congruence and similarity using physical models, transparencies, or geometry software