Solving Missing Angles in Triangles

Find the measure of the missing angle.

• 90^o

• 10⁰

• 130^o

• 50^o

Solve for x.

• 16

• 11

• 50

• 6

What is the third angle of a triangle whose 1st angle is 34 and 2nd angle is 101?

• 32

• 39

• 45

• 54

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

• 80

• 100

• 60

• 90

Mathematical Equivalence

OFF

Find all missing angles.

m∠1 ​ (a)   m∠2 ​ (b)  

m∠3​ (c)   m∠4 ​ (d)  

• 51

• 18

• 123

• 39

• 22

• 130

• 98

• 44

• 35

Find the measure of the indicated angle. Type only the number for your answer.

Mathematical Equivalence

ON

Find the measure of the indicated angle. Type only the number for your answer.

Mathematical Equivalence

ON

Find the measure of each missing angle.

m<1 ​ (a)   m<2 ​ (b)   m<3 ​ (c)   m<4 ​ (d)  

• 35

• 145

• 55

• 125

• 120

• 40

• 36

• 132

• 64

Find the missing angle measure.

• 40º

• 90º

• 130º

• 50º