Triangle Review

Triangle Review

Are you ready ?

_{Pythagorean Theorem}

• Leg² +Leg2 = hyp2

• ONLY WORKS ON RIGHT TRIANGLES

• use when you know 2 sides of right triangle and want to find the length of the third side.

Multiple Choice

What is the longest side of a right triangle called?

• Leg A
• Leg B
• Hypotenuse
• Pythagoras' Big Buddy

Multiple Choice

_{^{Find the missing side}}

• 9
• 41
• 6.4
• 3

Multiple Choice

Find the length of the missing side. 

• 20 in.
• 68 in.
• 16 in.
• 80 in.

^{Tangent Ratio}

• Only works on right triangles

• TAN ( ANGLE)= OPPOSITE/ ADJACENT

• Use when know one acute angle and one leg and want to find the length of the other leg

Multiple Choice

• 32/40
• 40/24
• 32/24
• 24/32

Multiple Choice

Solve for x. Round to the nearest tenth.

• 103.5
• 4.7
• 55.0
• 23.4

Multiple Choice

Identify the type of slope.

• Postive

• Negative

• Zero

• Undefined

Multiple Choice

Identify the slope (AC) of triangle ABC.

• 2

• 1/2

• -2

• -1/2

Multiple Choice

What is the length of the missing side?

• 100

• 95

• 115

• 105

Multiple Choice

Which of the following is NOT true about similar figures?

• A) Similar figures always have the same shape.
• B) Similar figures always have the same size.
• C) Similar figures always have corresponding angles that are equal.
• D) Similar figures always have corresponding sides that are proportional.

Multiple Choice

Choose the similarity statement for the triangles.

• ΔMNL ∼ ΔOPQ
• ΔNOM ∼ ΔPQL
• ΔLMN ∼ ΔPQO
• ΔMLN ∼ ΔPQO

Multiple Choice

Determine if the triangles are similar. Justify.

• Yes, by SSS.
• Yes, by SAS. Scale Factor is 1:2.
• Yes, by SAS. Scale Factor is 3:1.
• No, not similar.

Multiple Choice

What is the measure of x?

• 12
• 15
• 6
• 9

Multiple Choice

If two figures are similar, the corresponding sides are ______________.

• equal
• congruent
• proportional
• none of these

Multiple Choice

Are the triangles similar?

• Yes
• No

Multiple Choice

What similarity theorem would prove that these triangles are similar?

• SAS∼
• SSS∼
• AA∼
• Side Splitter

Multiple Choice

9. Which of these lengths CANNOT represent the sides of a triangle?

• 32, 34, 60
• 28, 30, 58
• 13, 20, 27
• 2, 4, 5

Multiple Choice

Find the measure of the indicated angle. 

• 34
• 46
• 62
• 36

Multiple Choice

Solve for x.

• 16
• 11
• 50
• 6

Multiple Choice

Find the measure of the indicated angle. 

• 95
• 85
• 35
• 45

Multiple Choice

Do the following side lengths form a triangle?
3, 10, 7

• Yes
• No

Multiple Choice

What kind of triangle is this?

• obtuse isosceles

• obtuse equilateral

• acute scalene

• obtuse right

Multiple Choice

What kind of triangle is this?

• obtuse scalene

• right isosceles

• acute equilateral

• right scalene

Multiple Choice

Is it a Triangle?
Side lengths 
1, 2, 1

• Yes
• No

Multiple Choice

Why isn't this a triangle?
Side lengths 
2, 6, 3

• Because 3 + 6 > 2
• Because 2 x 3 = 6
• Because 2 + 3 < 6
• Because 2 + 6 > 3

Multiple Choice

Classify by sides

• Right
• Isosceles
• scalene
• equilateral

Multiple Choice

What type of triangle has 3 congruent angles?

• isosceles
• equiangular
• equilateral
• right