Classification of angles and triangles
 __ 1 acute angle A. no sides have the same length __ 2 acute triangle B. has at least two equal sides __ 3 equiangular triangle C. has three equal sides __ 4 equilateral triangle D. has three acute angles __ 5 isosceles triangle E. contains an obtuse angle __ 6 obtuse angle F. has three equal angles __ 7 obtuse triangle G. measures between 90 & 180 degrees __ 8 reflex angle H. measures between 180 and 360 degrees __ 9 right triangle I. contains a right angle __ 10 scalene triangle J. measures between 0 and 90 degrees
 __ 11 all triangles do this A. the same size and the shape __ 12 ALL triangles have B. measures 180 degrees __ 13 a polygon with three sides C. have angles totaling 180 degrees __ 14 congruent triangles would be D. measures 90 degrees __ 15 it is not possible to have E. sides and angles __ 16 place where two sides meet F. three sides __ 17 right angle G. a triangle with one angle of 181 degrees __ 18 similar triangles may be - H. different sizes but similar shapes __ 19 straight angle I. triangle __ 20 triangles are classified by - J. vertex
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