The slopes of perpendicular lines are _______________ ____________.

opposite (+/-) reciprocals (flip)

Are angles 2 and 6 congruent or supplementary?

congruent (corresponding angles)

Are angles 2 and 8 congruent or supplementary?

supplementary (consecutive exterior)

If triangles are similar, their sides are _______________________ and their angles are _______________.

proportional (equal ratios/fractions) congruent

Are these triangles similar? If so, why?

yes, by AA (the 61 degree angles are the same and there is a pair of vertical angles)

Are these triangles similar? Explain.

no They have a set of congruent angles and a shared (reflexive) side, but that isn't enough to be SSS, SAS, or AA.

If a triangle is similar to this one, could its sides be 4, 6, 7? Explain.

Yes 4/8, 6/12, and 7/14 all equal 1/2, so the sides are proportional. They are similar by SSS.

Triangle BAC is similar to triangle EDF by SAS. Which sides are proportional to prove this?

BA/ED and AC/DF (or ED/BA and DF/AC)

Can you create a right triangle with these side lengths? Explain. 3, 4, 6

no They do not work in the Pythagorean Theorem.

Can you create a right triangle with these side lengths? Explain. 6, 8, 10

yes They work in the Pythagorean Theorem. 6 squared + 8 squared = 10 squared

Set up an equation to find x.

cos x = 109/134 then x = inverse cos (109/134)

Which quadrilaterals have congruent diagonals?

rectangles and squares (and isosceles trapezoids)

Are the diagonals of a parallelogram always perpendicular?

no (Only rhombi and squares have perpendicular diagonals.)

Do the diagonals of a parallelogram bisect the angles?

no (Only rhombi and squares have angles bisected by the diagonals.)

Geometry Quarter 3 Test Review Flashcards

Student preview

51 questions

Show all answers

1.

FLASHCARD QUESTION

Front

converse

Back

switch

2.

FLASHCARD QUESTION

Front

inverse

Back

negate

3.

FLASHCARD QUESTION

Front

contrapositive

Back

switch and negate

4.

FLASHCARD QUESTION

Front

meaning of this symbol

Back

therefore

5.

FLASHCARD QUESTION

Front

meaning of this symbol when used in logic statements

Back

not (negate)

6.

FLASHCARD QUESTION

Front

meaning of this symbol

Back

and

7.

FLASHCARD QUESTION

Front

meaning of this symbol

Back

or

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