6.8A Triangle Properties (including perimeter)

Look at angle measurements of the triangle below, and then find missing angle.

Angle A = 25^o

Angle B = 80^o

Angle C = ?

 

• 75^o

• 65^o

• 85^o

• 50^o

Tags

CCSS.8.G.A.5

Look at angle measurements of the triangle below, and then find missing angle.

Angle A = 45^o

Angle B = 45^o

Angle C = ?

 

• 90^o

• 85^o

• 105^o

• 60^o

Tags

CCSS.8.G.A.5

Look at angle measurements of the triangle below, and then find missing angle.

Angle A = 65^o

Angle B = 75^o

Angle C = ?

 

• 40^o

• 25^o

• 35^o

• 50^o

Tags

CCSS.8.G.A.5

Look at the angle measurements below and determine which could be a triangle?

• 40^o, 60^o, 80^o

• 25^o, 85^o, 95^o

• 35^o, 55^o, 45^o

• 50^o, 110^o, 10^o

Tags

CCSS.8.G.A.5

Look at the angle measurements below and determine which could be a triangle?

• 50^o, 10^o, 120^o

• 55^o, 65^o, 95^o

• 30^o, 55^o, 20^o

• 45^o, 110^o, 45^o

Tags

CCSS.8.G.A.5

Look at the angle measurements below and determine which could not be a triangle?

• 40^o, 80^o, 70^o

• 30^o, 60^o, 90^o

• 120^o, 30^o, 30^o

• 45^o, 90^o, 45^o

Tags

CCSS.8.G.A.5

Look at the side lengths below and determine which could not be a triangle?

• 6, 8, 16

• 5, 6, 18

• 4, 4, 4

• 9, 12, 23

Tags

CCSS.7.G.A.2

Look at the side lengths below and determine which could be a triangle?

• 2.5, 8.5, 12

• 3, 4, 5

• 4, 6.5, 10

• 4.2, 5.8, 9

Tags

CCSS.7.G.A.2

A teacher placed 3 lines on the board and asked if they could make a triangle.

2.5 cm, 5.5 cm, 7 cm

Which student is correct?

• Carol said it can not make a triangle because the longest side must be larger than 8 cm.

• Jessica said it can not make a triangle because the longest side must be smaller than 8 cm.

• Mike said it can make a triangle because all the side length are different.

• Jonathan said it can make a triangle because the longest side is smaller than 8 cm.

A teacher placed 3 lines on the board and asked if they could make a triangle.

5 cm, 6 cm, 15 cm

Which student is correct?

• Carol said it can not make a triangle because the longest side must be larger than 11 cm.

• Jessica said it can not make a triangle because the longest side must be smaller than 11 cm.

• Mike said it can make a triangle because all the side length are different.

• Jonathan said it can make a triangle because the longest side is larger than 11 cm.

Tags

CCSS.7.G.A.2