Three (3) is a common factor of 21 and 22

A. True
B. False

Itsjackenley

False

Step-by-step explanation:

3 is a factor of 21 but it is not a factor of 22

A.

The Greatest Common Factor for 21 and 22, notation GCF 21 and 22 is 1.

Step-by-step explanation:

The factors of 21 are 1, 3, 7, 21

The factors of 22 are 1, 2, 11, 22

The GCF or division is 1, because it is the greatest number that divides evenly into all of them.

b. an equilateral triangle inscribed in a circle

step-by-step explanation:

we are given the figure of two circles having a triangle inside.

now, we know that,

"when a figure is lying inside an another figure, then the outside figure is known as circumscribed figure and the figure lying inside is referred to as the inscribed figure".

as we see that, the circles are containing the triangle completely.

thus, the circles are the circumscribed figures and the triangle is the inscribed figure.

hence, we get, 'an equilateral triangle is inscribed in a circle'.