Intro to Triangle Properties Lesson

Multiple Choice

What type of triange has 3 equal sides?

• Scalene

• Equilateral

• Isosceles

Multiple Choice

What type of triangle has 2 equal sides?

• scalene

• Equilateral

• Isosceles

Multiple Choice

What type of triangle has no equal sides?

• Scalene

• Equilateral

• Isosceles

Multiple Choice

What triangle has one 90 degree angle?

• Obtuse

• Right

• Acute

Multiple Choice

What type of triangle has all angles less than 90 degrees?

• Obtuse

• Acute

• Right

Multiple Choice

What type of triangle is this?

• Obtuse

• Right

• Acute

Match

Match the following triangles to the type.

Scalene

Isosceles

Equilateral

• Scalene

• Isosceles

• Equilateral

Multiple Choice

What type of triangle is this?

• Obtuse

• Acute

• Right

Multiple Choice

Find the measure of the missing angle.

• 30^o
• 110^o
• 150^o
• 40^o

Multiple Choice

Find x.

• 60 degrees

• 90 degrees

• 50 degrees

• 180 degrees

Multiple Choice

Find the measure of the missing angle.

• 90^o
• 10⁰
• 130^o
• 50^o

Multiple Choice

What is the third angle of a triangle whose 1st angle is 79 and the 2nd angle is 43?

• 43
• 58
• 72
• 101

Multiple Choice

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

• 45°
• 90°
• 180°
• 360°

Multiple Choice

Does a triangle with these side lengths exist?

15, 12, 9

• Yes

• No

• I don't know.

• Cannot be determined

Multiple Choice

Can a triangle be formed with side lengths:
4, 7, 10

• yes
• no
• not enough information

Multiple Choice

Can a triangle be formed with side lengths:
17, 9, 30

• yes
• no
• not enough information

Multiple Choice

Which set of side lengths will form a triangle?

• 3, 6, 12

• 7, 7, 14

• 9, 9, 9

• 13, 6, 7

Open Ended

Explain 3 things you learned from this video. (You must answer in complete sentences).