Angle and Triangle Review

What is the measure of angle ACB?

When classifying a triangle by its angles, what type of triangle has one right angle?

• acute triangle

• right triangle

• obtuse triangle

• none of the above

When classifying a triangle by its angles, what type of triangle has three acute angles? 

• acute triangle

• right triangle

• obtuse triangle

• none of the above

When classifying a triangle by its angles, what type of triangle has one obtuse angle? 

• acute triangle

• right triangle

• obtuse triangle

• none of the above

Two angles in a triangle measure 18° and 60°. What is the measure of the third angle in the triangle?

• 222°

• 22°

• 122°

• 102°

Two angles in a triangle measure 30° and 105°. What is the measure of the third angle in the triangle?

• 45°

• 65°

• 75°

• 105°

What is the sum of the measures of the angles of any triangle?

• 90°

• 360°

• 180°

• 45°

Stuart drew a triangle. ∠ABC had a measure of 60 degrees. ∠BAC also had a measure of 60 degrees. ∠ACB also had a measure of 60 degrees. What kind of triangle is ΔABC?

• Right

• Acute

• Obtuse

• Straight

Main Street and Walnut Street make a _______ angle.

• Acute

• Obtuse

• Right

• Straight

Without using a protractor, find the measure of X.

• 45 degrees

• 28 degrees

• 32 degrees

• 118 degrees