Triangle Review

An angle whose measure is 90° . 

• acute angle
• obtuse angle
• right angle
• straight angle

A(An) _______ is an angle whose measure is more than 90° but less than 180° .

• acute angle
• obtuse angle
• right angle
• straight angle

A(An) _____ is an angle whose measure is less than 90°

• acute angle
• obtuse angle
• right angle
• straight angle

A pair of angles whose sum is 90° are called ______.    

• supplementary angles
• complementary angles

A pair of angles whose sum is 180° are called ______.  

• supplementary angles
• complementary angles

A triangle that has three congruent sides and three congruent angles is classified as a(an)______________. 

• equilateral, equiangular triangle
• acute, scalene triangle
• right, isosceles triangle
• obtuse, scalene triangle

A triangle that contains one right angle is classified as a(an)______________.

• acute triangle
• right triangle
• obtuse triangle
• corner triangle

A triangle that contains one obtuse angle is classified as a(an)______________.

• acute triangle
• right triangle
• obtuse triangle
• huge triangle

A triangle that contains all acute angles is classified as a(an)______________.

• acute triangle
• right triangle
• obtuse triangle
• pretty tri-cute triangle

A triangle that has NO sides congruent is classified as a(an)______________.

• equilateral triangle
• scalene triangle
• isosceles triangle
• odd triangle