Triangle Theorems

Find the measure of the missing angle.

• 90^o
• 10⁰
• 130^o
• 50^o

What is the measure of x?

• 101°

• 111°

• 121°

• 131°

Find the value of x and choose the correct theorem used to find the value.

• x = 6

• x = 4

• x = 5

• by the Base Angles Theorem

• by the Converse to the Base Angles Theorem

Find the value of x and choose the theorem you used to find the value.

• x = 50

• x = 25

• x = 30

• by the Base Angles Theorem

• by the Converse to the Base Angles Theorem

• A
• B
• C
• D

Solve for x.

• 1

• 2

• 3

• 4

Find the value of x

• 41
• 45
• 31
• 98

Find the measure of angle A.

• 75^o

• 60^o

• 30^o

• 38^o

According to the Isosceles triangle base angles converse theorem,

If two angles of a triangle are congruent, then the sides opposite them are ____________________.

• complementary

• adjacent

• supplementary

• congruent

What do the angles in an equilateral triangle measure?

• 30, 60, 90
• 60, 60, 60
• 45, 45, 90
• 35, 55, 90