finding the missing angle in triangles

Find the measure of the angle indicated.

• 139°

• 66°

• 138°

• 116°

Which of the following is NOT an example of supplementary angles?

•  $\angle7\ and\ \angle8$  

•  $\angle2\ and\ \angle3$  

•  $\angle1\ and\ \angle7$  

•  $\angle6\ and\ \angle4$  

Find the measure of angle A.

• 75^o

• 60^o

• 30^o

• 38^o

Which Angles are Vertical Angles?

•  $\angle5\ and\ \angle3$ 

•  $\angle2\ and\ \angle4$ 

•  $\angle1\ and\ \angle4$ 

• $\angle6\ and\ \angle4$

Find the measure of the missing angle.

• 139°
• 66°
• 138°
• 116°

What type of angles are these?

• Adjacent Angles

• Vertical Angles

• Complementary Angles

• Supplementary Angles

This is what kind of angle?

• obtuse
• right
• straight
• acute

What angle is vertical to angle 2?

• ∠4

• ∠1

• ∠2

• ∠5

Find the missing angle.  Find x.

• 15^o
• 50^o
• 130^o
• 165^o

​ (a)   triangle , because ​ (b)  

• Right
• There is one 90 degree angle
• Obtuse
• Acute
• There are three acute angles
• There is one obtuse angle