Classifying Triangles and Solving for Missing Angles

Look at the sides and angles of this triangle. Which type of triangle is pictured?

• Equilateral Triangle
• Right Isosceles Triangle
• Obtuse Scalene Triangle
• Obtuse Equilateral Triangle

Tags

CCSS.4.G.A.2

Classify by its angles.

• acute
• equiangular
• right
• obtuse

Tags

CCSS.4.G.A.2

Classify the following triangle in as many ways as possible. 

• Isosceles, Acute
• Isosceles, Obtuse
• Scalene, Obtuse
• Equilateral, Acute

Tags

CCSS.4.G.A.2

Find the measure of each angle indicated. 

• 139°
• 66°
• 138°
• 116°

Tags

CCSS.8.G.A.5

What is the measure of angle c?

• 180

• 70

• 20

• 110

Tags

CCSS.8.G.A.5

Which of the following angles can you add together to equal angle d?

• ∠a + ∠b = ∠d

• ∠a + ∠c = ∠d

• ∠b + ∠c = ∠d

• No two angles add to equal angle d

Tags

CCSS.8.G.A.5

What is the measure of angle b?

• 36^o
• 56^o
• 63^o
• 117^o

Tags

CCSS.8.G.A.5

Find the value of x by using the exterior angle theorem.

• A
• B
• C
• D

Tags

CCSS.8.G.A.5

Find x.

• x = 118
• x = 31
• x = 23
• x = 62

Tags

CCSS.8.G.A.5

Find the measure of the indicated angle. 

• 145
• 113
• 102
• 78

Tags

CCSS.8.G.A.5