Which steps will verify that is a rectangle

1) Are there 4 right angles? (90° angles)

2) Are there 2 sets of parallel lines?

3) Are there 2 sets of congruent lines?

4) Are there a set of congruent diagonals?

~

hope this .

r3t40

60°

step-by-step explanation:

the measure angle of c in an isosceles triangle abc is 60° because in isosceles triangle,the measures of all the angles is 60°.