Ratios

Proportions

AA/SSS/SAS

Similarity Statements

Similar?

100

How can we tell if two triangles are congruent or similar?

Congruent - same shape, same size

Similar - same shape, different size

100

What is a proportion?

Two fractions set equal to each other.

100

According to the SAS similarity, what do two triangles need to have in order to be similar?

What is a pair of congruent included angles and two pairs of proportional sides?

100

True or false?

A similarity statement must go in alphabetical order

FALSE.

A similarity statement must match the order of both corresponding angles and sides. That may or may not be in alphabetical order.

100

In what ways can triangles be similar?

What are the SAS, AA and SSS similarity methods?

200

If triangle HOP is similar to triangle ILY, which side of ILY would correspond with PO?

YL

200

9/54=x/12

Find x

X=2

200

What makes these triangles similar?

The AA similarity theorem.

Angle u ~ Angle u

Angle wxu ~ Angle vtu

200

What is the correct similarity statement?

NLK ~ NLM

The hypotenuse is congruent, and so are NK and NM

200

Are these triangles similar?

Yes

300

If triangle DEF is congruent to ABC, what angle corresponds with angle A?

A = D

300

Given two equilateral triangles with sides 16 and 18 respectively. The scale factor of the larger triangle to the smaller triangle.

What is 9 to 8?

300

Two right triangles have the following angles: Triangle 1 has a 35 degree angle and Triangle 2 has a 55 degree angle. Are these triangles similar? If so, how?

Yes, by Angle Angle Similarity method.

300

Triangle ABC is similar to triangle RST. Complete this staement: Triangle BCA is similar to ...

What is Triangle STR?

300

Are these similar?

What is not similar?

400

If the sides of triangle FED are 1 cm, 3 cm, and 8 cm, and the sides of triangle CBA are 3 cm, 9 cm, and 24 cm, are the triangles similar?

Yes

400

Find the perimeter of Triangle DEF

What is 33?

400

What similarity theorem are these triangles similar by?

These are similar by the SAS similarity.

400

Given Triangle MNO is similar to Triangle CDE, complete:

Triangle OMN is similar to ....

What is Triangle ECD?

400

Similar? If so, how?

What is yes by SSS similarity?

500

If the sides of triangle ABC are 2 inches, 5 inches, and 6 inches, and the sides of triangle DEF are 4 inches, 10 inches, and 11 inches, are the triangles similar?

No

500

The value of x:

4 /x = x/ 16

What is x equals 8?

500

These are similar according to the SAS similarity theorem.

500

Double Jeopardy...place your bet!

Double Jeopardy!!!

Answer C 80 feet

500

What is congruent in similar triangles?

Angles