Vocab
Similar Polygons
Similar Polygons
Transformations
Proofs
100

*Double Jeopardy*

This is a comparison of a number a to a nonzero number b using division.

What is a ratio?

100

When all pairs of corresponding angles are congruent and all pairs of corresponding sides are congruent, then two figures are said to be this.

What is congruent?

100

*Double Jeopardy*

When all pairs of corresponding angles are congruent and all corresponding side lengths are proportional, then two figures are said to be this.

What is similar?

100
This is an operation that maps or moves an original figure to a new image.
What is a transformation?
100

*Double Jeopardy*

Triangle MOR has sides MO=6 and OR=10. Triangle GHI has sides HI=4 and GH=3. Angle O and angle H are right angles. Are the triangles similar? Explain.

What is no? 6/3 does not equal 10/4.

200
If two polygons are similar, then the ratio of the lengths of two corresponding sides is called this.
What is a scale factor?
200

*Double Jeopardy*

JDRT~JHYX. Angle D = ?

What is angle H?

200
This is the reduced form of the ratio 203/87.
What is 7/3?
200

*Double Jeopardy*

When the new image of a dilated figure is smaller than the original it is called this.

What is a reduction?

200

Triangles FGH and JKH share point H. Also, JK is parallel to FG. Are the triangles similar? Explain.

What is yes. Two angles are congruent.

300

*Double Jeopardy*

This is an equation that states that two ratios are equal.

What is a proportion?

300

AC is the perpendicular bisector of DB. The length of AB is 8x and the length of AD is 5x + 12. This is the length of AD.

What is 32?

300

*Double Jeopardy*

This is what x is equal to in the proportion: 12/(5x - 3) = 6/11.

What is 5?

300
This type of transformation creates a mirror image of the original figure.
What is a reflection?
300

*Double Jeopardy*

Triangles ABC and YZX are similar. AB=5, AC=3, XY=4.5, and YZ=x. Find x.

What is 7.5?

400

triangles that have the same shape, but not necessarily the same size

What are similar triangles?

400

JDRT~KLMN. ML~_____

What is RD?

400
Y is the midpoint of AB and Z is the midpoint of AC. If YZ is equal to 4, then this is what BC is equal to.
What is 8?
400
This is the only type of transformation that will contain numbers in the coordinate notation.
What is a translation?
400

Triangle JKL has sides JK=9, JL=12, and KL=15. Triangle PQR has sides PR=1.5, RQ=2, and PQ=2.5. Are the triangles similar? Explain.

What is yes where all sides are proportional?

500
EF/AB=FG/BC=GH/CD=HE/DA when relating the ratios of corresponding sides of a quadrilateral is an example of this.
What is a statement of proportionality?
500

It is this that if a parallelogram is cut by a diagonal, then the two triangles that are formed have to be congruent.

What is true?

500
In a dilation enlargement the length of CP' is 8 and the length of CP is 3. The length of PQ is 12. This is the length of P'Q'.
What is 32?
500
This type of transformation uses the coordinate notation (x,y)->(y,-x).
What is a 90o clockwise rotation?
500

A little boy stands across from a giraffe at the zoo. They are both looking at the same spot on the ground. The spot is 5 ft away from the 5 ft 3 in. boy and is 15 ft from the giraffe. Draw a picture. Are the triangles similar? Explain. If so, find the height of the giraffe.

What is yes by proportion? The giraffe is 15ft 9 in (or 15.75 ft) tall.

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