Dilation
Similarity
Random
100
Dilations can result in a congruent figure if their scale factor is...
1
100
Define Similar
When two shapes are alike.
-They have the same shape, angle measurements, but side lengths are proportional.
100
Define Congruent
When shapes are exactly the same. (Shape, Size, angle measurements, and side lengths)
200
Are these figures similar? If so, what the scale factor from ABC to DEF
the scale factor is 1.5
200
What are the only things that ALWAYS stay the same on similar figures?
Shape and Angle Measurements
200
Are they similar? explain
Yes b/c 2 out of 3 of their angle measures are the same so their 3rd has to be the same.
300
Define Dilations and name the things you need to perform a dilation.
- Multiplying a shape by a scale factor to create a new shape.
-Center of Dilation
-Scale Factor
300
1.Congruent figures are __________ similar.
2.Similar figures are _________ congruent.
(always, sometimes, never)
1.Always
2.Sometimes
300
What geometric transformations can be used to prove congruency?
1. Rotation
2. Reflection
3. Translation
400
Describe a transformation to show similarity from triangle ABC to CDE
Dilate triangle ABC using COD point P and a scale factor of 1.5
400
B - Right triangles have 90 degree angles. if one triangle has a 40 and one has a 50 degree angle then 50 and 40 are the measurements that make the 180 degrees in the triangle.
400
How will dilating a figure by a scale factor of 1/3 affect the figure
it will make it 3 times smaller
500
Describe the dilation. (small to large. center of dilation. scale factor)
COD - (3,0)
scale factor - 3
500
D
500
What geometric transformations can be use to prove similarity
1. Rotation
2. Reflection
3. Translations
4. Dilations