Find Angles and Sides of Right Triangles

Find the measure of the missing angle in the triangle.

Use the angles to classify the triangles

all angles less than 90° - acute triangle

1 angle is equal to 90° - right triangle

1 angle is greater than 90° - obtuse triangle

What equation would you use to find the value of x?

• 2x-6=7x+4

• 2x-6+7x+4=90

• 2x-6+7x+4=180

• 2x-6+7x+4=360

• A) 25°

• B) 30°

• C) 35°

• D) 40°

Find the measure of angle A.

• 75^o

• 60^o

• 30^o

• 38^o

Select the answer below.

• A

• B

• C

• D

Find the measure of angle A.

• 75^o

• 60^o

• 30^o

• 38^o

Find the measure of each angle indicated.

• 40°

• 33°

• 30°

• 29°

• The triangle has three sides with equal lengths.

• The triangle has only two sides with equal lengths.

• The triangle has only two sides with equal lengths.

• The triangle has one angle that is equal to 90 degrees.

• an acute angle and an obtuse angle

• two acute angles

• an obtuse angle

• a straight angle