Answer:
area of a triangle is 1/2×h×b
Step-by-step explanation:
1÷2×12×13
=78
If a figure has exactly three sides, then it is not a triangle.
Half of the distance from one side, through the middle, to the other side.
circumference: 3.14*radius*2
Answer:
Step-by-step explanation:
ABC and DEF are congruent
ABC and JKL are not congruent
ABC and QRS are congruent
JKL and DEF are not congruent
JKL and QRS are not congruent
QRS and DEF are congruent
