Triangles

Find the measure of the missing angle.

• 90^o
• 10⁰
• 130^o
• 50^o

What is the sum of all the angles in a triangles ?

• 100%

• 180 degrees

• 90 degrees

• 360 degrees

If 2 of the angles of a triangle are 30 and 70 degrees, the third angle measures...

• 80
• 100
• 60
• 90

Name this triangle by its sides.

• scalene

• isosceles

• equilateral

• obtuse

Name this triangle by its angle and sides.

• acute, scalene

• obtuse scalene

• right, scalene

• right, isosceles

If all of the angles are equal, what does each angle equal?

• 180 degrees

• 30 degrees

• 60 degrees

• 90 degrees

.
.
.
What is the name of this kind of triangle?

• Right
• Scalene
• Isosceles
• Equilateral

Each pair of vertically opposite angles are equals.

• True

• False

Look at the diagram. What is the value of  $\angle b$  ?

•  $123\degree$  

•  $58\degree$  

•  $132\degree$  

•  $68\degree$  

Which angles are vertically opposite?

• $\angle a\$ and $\angle d$

• $\angle a\$ and $\angle b$

• $\angle c$ and $\angle d$

• $\angle a$ and $\angle c$