Claire is designing a banner that will hang in her classroom. the length of one diagonal of the banner is 48 inches, and the sides are 25 inches long. is the banner a square?

it is not a square because opposite angles are not congruent.
it is not a square because the angles at the vertices are not right angles.
it is a square because all the sides are congruent.
it is a square because the diagonals are perpendicular.

answer: b is the right answer. it is not a square because the angles at the vertices are not right angles.

step-by-step explanation:

if claire's banner is a square then its internal angle must be 90°.

⇒ square must divide into two right triangles with base and perpendicular is equals to the side =25 in. and hypotenuse = diagonal of square.

by pythagoras theorem of right triangles

which is not true.

⇒ it is not a right triangle .

therefore the internal angle is not 90°.

thus,it is not a square because the angles at the vertices are not right angles.

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.

3/5

step-by-step explanation:

double number line is not a standard concept, so it must have been defined in your textbook. assume top line is numerator.