Isosceles & Equilateral Triangles

Isosceles & Equilateral Triangles

Multiple Choice

If a triangle has one angle greater than 90° and no equal sides, what type of triangle is it?

• Acute Isosceles
• Acute Scalene
• Obtuse Scalene
• Obtuse Isosceles

Multiple Choice

Which type of triangle is pictured?

• A

• B

• C

• D

Multiple Choice

Which type of triangle is pictured?

• A

• B

• C

• D

Multiple Choice

Which type of triangle is pictured?

• A

• B

• C

• D

Multiple Choice

An isosceles triangle has _________ equal sides.

• one

• two

• three

• four

Multiple Choice

A triangle has angle measurements of 74°, 90°, and 16°. What kind of triangle is it?

• acute triangle
• right triangle
• obtuse triangle
• none of the above

Multiple Choice

Classify the triangle by angles and sides.

• Equiangular Equilateral

• Right Isosceles

• Right Scalene

• Acute Isosceles

Multiple Choice

Find the measure of the indicated angle. 

• 145
• 113
• 102
• 78

Multiple Choice

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______.

• 45°

• 90°

• 180°

• 360°

Multiple Choice

Find the indicated angle measure. (What is ?)

• 51°

• 37°

• 167°

• 41°

Multiple Choice

Find the measure of the third angle.

• 90 degrees

• 180 degrees

• 45 degrees

• 35 degrees

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Multiple Choice

What do you call the two congruent sides of an isosceles triangle?

• Legs

• Base Angle

• Vertex Angle

Multiple Choice

What angle is the vertex angle?

• Angle F

• Angle E

• Angle D

Multiple Choice

Which pair of sides is congruent?

• AC and BC

• AC and AB

• AB and BC

• none of them

Multiple Choice

Which pair of angles is congruent?

• <A and <B

• <A and <C

• <B and <C

• none of them

Multiple Choice

Find x.

• 12

• 11

• 8

• 6

Multiple Choice

Determine x

• 93
• 71
• 81
• 55

Multiple Choice

What is the measure of ∠S?

• 60⁰

• 52⁰

• 45⁰

• 36⁰

Multiple Choice

What is the value of x?

• 16

• 17

• 51

• 78

Multiple Choice

The sides of an equilateral triangle have...

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

Multiple Choice

What do the angles in an equilateral triangle measure?

• 30, 60, 90
• 60, 60, 60
• 45, 45, 90
• 35, 55, 90

Multiple Choice

Find the length of LM.

• 4

• 5

• 3

• 6

Multiple Choice

Find the value of x.

• 60

• 30

• 20

• 10

Multiple Choice

What is the measure of BC?

• 12

• 6

• not enough information

• 10

Multiple Choice

Find x

• 3
• 4
• 2
• 10

Multiple Choice

What is the length of DF?

• 8

• 4

• 25

• 71

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