Triangle Sum Theorem

Front

Which of the following is false?

• A triangle can be drawn with 3 acute angles.
• A triangle can be drawn with 2 obtuse and one acute angles.
• A triangle can be drawn with only one obtuse angle and two acute angles.
• A triangle can be drawn with only one right angle and two acute angles.

Back

A triangle can be drawn with 2 obtuse and one acute angles.

Front

Solve for x.

Back

-7^o

Front

Find the measure of the missing angle. Options: 30^o, 110^o, 150^o, 40^o

Back

30^o

Front

Will the following three angles form a triangle? 30°, 60°, 90°

Back

yes

Front

Which set of angles will form a triangle? Options: 45°, 65°, 70°; 150°, 110°, 100°; 50°, 50°, 50°; 90°, 90°, 90°

Back

45°, 65°, 70°

Front

A triangle has one angle that measures 81° and one that measures 37°. What is the measure of the third angle?

Back

62°

Front

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

Back

75°

Front

Solve for x.

Back

6

Front

Will these three sides form a triangle?

Back

yes

Front

Will these side lengths form a triangle?

Back

no