Intro to Triangles

Basic of Triangles Review

Multiple Choice

Classify the triangle by its angle and sides.

• Equilateral

• Acute Scalene

• Acute Right

• Obtuse Right

Multiple Choice

Classify the triangle by its angle and sides.

• Equilateral

• Acute Scalene

• Acute Right

• Obtuse Scalene

Multiple Choice

Classify the triangle by its angle and sides.

• Obtuse Scalene

• Impossible

• Acute Isosceles

• Acute Scalene

Multiple Choice

Classify the triangle by its angle and sides.

• Obtuse Scalene

• Impossible

• Acute Isosceles

• Equiangular

Multiple Choice

Find the missing angle x.

• 145^o

• 90^o

• 35⁰

• 180^o

Multiple Choice

In a triangle, how many total degrees are there?

• 100%
• 180 degrees
• it varies
• 360 degrees

Multiple Choice

Find the measure of the missing angle.

• 90^o

• 10⁰

• 130^o

• 50^o

Multiple Choice

Find the measure of the indicated angle.

• 95

• 85

• 35

• 45

Multiple Choice

Find the measure of angle x. Be careful! They did NOT give you two remote interior angles.

• 138

• 96

• 93

• 87

Multiple Choice

Find the measure of the missing angles.

• A

• B

• C

• D

Multiple Choice

Hint: Remeber their sum is 180^o.

• 11

• 25

• 35

• 50

Multiple Choice

Solve for the missing angle with the question mark. 

• A
• B
• C
• D

Multiple Choice

The measure of angle 2 is ___.

• 58

• 64

• 26

• 32

Multiple Choice

What are the different parts of an isosceles triangle?

• 1 leg, 2 vertex angles, 1 base, and 2 base angle

• 1 leg, 2 vertex angles, 2 bases, and 1 base angle

• 2 legs, 1 vertex angle, 1 base, and 2 base angles

• 2 legs, 1 vertex angle, 2 bases, and 1 base angle

Multiple Choice

Find x.

• 72

• 67

• 65

• 54

Multiple Choice

Determine x

• 93
• 71
• 81
• 55

Multiple Choice

What is x?

• 12

• 11

• 8

• 6

Multiple Choice

Find x

• 90
• 45
• 22
• 35

Multiple Choice

Find the value of x.

• 1

• 4

• 5

• 8

Multiple Choice

Find the value of the base angle. 

• 30
• 120
• 60
• 180

Fill in the Blank

Multiple Choice

The sides of an equilateral triangle have...

• different measures.
• Febtober.
• equal measures.
• 60°.

Multiple Choice

What is the measure of BC?

• 12

• 6

• not enough information

• 10

Multiple Choice

What is the measure of ∠S?

• not enough information

• 30

• 60

• 180

Multiple Choice

Find x

• 3
• 4
• 2
• 10

Multiple Choice

What is the length of DF?

• 8

• 4

• 25

• 71

Multiple Choice

Is DE 1/2 the length of BC?

• Yes
• No

Multiple Choice

If LN = 5, then AC = ______.

• 5
• 10
• 15
• 25

Multiple Choice

Complete the statement, the midsegment of a triangle is half the length of the ___ ____ to it.

• angle oppostie
• side perpendicular
• side parallel
• incenter point

Multiple Choice

What segment is parallel to EF?

• Segment PM
• Segment MN
• Segment NP
• Segment FG

Multiple Choice

How many midsegments does a triangle have?

• 1
• 2

• 3
• 4

Multiple Choice

What is the value of y?

• 3

• -3

• No Solution

• 5

Multiple Choice

What is the value of x?

• 10

• No Solution

• 5

• 2

Multiple Choice

QR is a midsegment of ∆FGH. Solve for the value of x? Remember the formula... 2(midsegment) = opp. side

• 5.5

• 11

• -5.5

• -11

Multiple Choice

$$\overline{TS}$$  is a midsegment of $$\Delta GHI$$ . 
Solve for the value of x.

Remember the formula... 2(midsegment) = opp. side

• 4

• 6

• 8

• 10

Multiple Choice

$$\overline{QR}$$  is a midsegment of $$\Delta BCD$$ . 
Solve for the value of x.

Remember the formula... 2(midsegment) = opp. side

• 11

• 18

• 9

• -7

Multiple Choice

The midsegment of the triangle is 5x-1.

Find the value of x.

Remember the formula... 2(midsegment) = opp. side

• x = 6

• x = 7

• x = 11.8

• x = 12.4

Multiple Choice

State if the three numbers can be the measures of the sides of a triangle.

14, 10, 8

• Yes

• No

Multiple Choice

State if the three numbers can be the measures of the sides of a triangle.

1, 12, 14

• Yes

• No

Multiple Choice

Two sides of a triangle have the following measures. Find the range of possible measures for the third side.

9, 9

• $$3<x<16$$

• $$0<x<18$$

• $$4<x<18$$

• $$1<x<18$$

Multiple Choice

Two sides of a triangle have the following measures. Find the range of possible measures for the third side.

9, 12

• $$3<x<21$$

• $$6<x<21$$

• $$5<x<19$$

• $$3<x<15$$

Multiple Choice

Order the sides of each triangle from shortest to largest.

• WX and VW ; VX

• VX, WX, VW

• WX, VX, VW

• All sides are equal

Multiple Choice

Order the sides of each triangle from shortest to largest.

• TV, TU, UV

• TU, UV, TV

• TU, TV, UV

• UV, TV, TU

Multiple Choice

Order the angles of each triangle from shortest to largest.

• $$\angle B,\ \angle D,\ \angle C$$

• $$\angle D,\ \angle B,\ \angle C$$

• $$\angle B,\ \angle C,\ \angle D$$

• $$\angle D,\ \angle C,\ \angle B$$

Multiple Choice

Order the angles of each triangle from shortest to largest.

• $$\angle B,\ \angle A,\ \angle C$$

• $$\angle A,\ \angle C,\ \angle B$$

• $$\angle B,\ \angle C,\ \angle A$$

• $$\angle C,\ \angle A,\ \angle B$$