triangle and quadrilateral vocab

Front

straight angle equals

Back

180

Front

m<1+m<2+m<3=__

Back

180

Front

acute angle is ___

Back

Smaller than 90

Front

right angle is ___

Back

90

Front

obtuse angle is

Back

bigger than 90 less than 180

Front

Acute triangle

Back

3 acute angles

Front

right triangle

Back

one 90 angle and 2 acute angle

Front

obtuse triangle

Back

1 obtuse angle and 2 acute angles

Front

equilateral triangle

Back

3 congruent sides

Front

isosceles triangle

Back

2 congruent sides