Angle Relationships and Triangle Sum Theorem

Find the measure of the indicated angle. 

• 26

• 36

• 85

• 144

A triangle has one angle that measure 45° and one that measures 60°. What is the measure of the third angle?

______ degrees

Mathematical Equivalence

ON

Find the measure of x in degrees using the Exterior Angle Theorem.

• 40

• 54

• 60

• 42

Name the sides from SMALLEST to LARGEST

• RS, ST, TR

• ST, RT, RS

• RT, ST, RS

• RT, RS, ST

Find the missing angle.  Find x.

• 20^o

• 70^o

• 160^o

• 180^o

Find x.

• 15

• 16

• 18

• 19

Which of the following angles are remote interior angles to angle d?

• Angle a and Angle b

• Angle b and Angle c

• Angle a and Angle c

• Angle a and Angle b and Angle c

Supplementary angles add up to equal...

• 90 degreees

• 80 degrees

• 360 degrees

• 180 degrees

Find the exterior angle, using the Exterior Angle Theorem. What is the measure of "?".

• A

• B

• C

• D

If m∠1 = 30°, then m∠3 = 

• 30°

• 60°

• 150°

• undetermined