Identifying and Classifying Triangles

What is the minimum number of sides that define a triangle?

• 2 sides

• 1 side

• 3 sides

• 4 sides

Tags

CCSS.2.G.A.1

Which angle is exactly 90 degrees?

• Obtuse angle

• Acute angle

• Straight angle

• Right angle

Tags

CCSS.4.G.A.1

What must all triangles have, according to the video?

• At least one right angle

• At least one obtuse angle

• At least two right angles

• At least two acute angles

Tags

CCSS.4.G.A.2

How many acute angles does an acute triangle have?

• 2

• 1

• 0

• 3

Tags

CCSS.4.G.A.2

What type of angle does a right triangle always include?

• Acute angle

• Right angle

• Straight angle

• Obtuse angle

Tags

CCSS.4.G.A.2

Which triangle has one angle greater than 90 degrees?

• Right triangle

• Equilateral triangle

• Acute triangle

• Obtuse triangle

Tags

CCSS.4.G.A.2

What visual analogy was used for an acute triangle?

• A ladder

• A house

• A piece of pizza

• A hang glider

Tags

CCSS.4.G.A.2

What common item was used as an example of a right triangle?

• Ladder

• Hanger

• Sandwich

• Candle holder

Tags

CCSS.2.G.A.1

Which triangle type was demonstrated using a hanger?

• Acute triangle

• Obtuse triangle

• Right triangle

• Isosceles triangle

Tags

CCSS.4.G.A.1

What does the teacher challenge students to find in their home?

• Objects shaped like circles

• Items with parallel lines

• Square-shaped objects

• Examples of each type of triangle

Tags

CCSS.2.G.A.1