Finding Angles in Triangles and Polygons

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

Find the measure of the missing angle.

• 90^o

• 10⁰

• 130^o

• 50^o

In a triangle, how many total degrees are there?

• 100%

• 180 degrees

• it varies

• 360 degrees

step 1: set up an equation

step 2: Solve for x

step 3: Plug in x for each expression

step 4: Add the two answers from step 3

• 82

• 41

• 17

• 90

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

• 80

• 100

• 60

• 90

What do the angles in an equilateral triangle measure?

• 30, 60, 90

• 45, 45, 90

• 60, 60, 60

• 35, 55, 90

Find the measure of each angle indicated. 

• 139°

• 66°

• 138°

• 116°

Find the largest angle in Δ PRQ

• ∠R

• ∠P

• ∠Q

• ∠S

The smallest angle would be located where in a triangle?

• Across from the smallest side.

• Across from the largest side

• Cannot tell