Which polygon appears to be regular?

a.
figure a

b.
figure b

c.
figure c

d.
figure d

Figure A is regular polygon.

Step-by-step explanation:

We are given four different figure. We need to select one regular figure.

Regular Polygon: It is figure whose sides, angles and exterior angles are equal.

Figure A: It is square of two dimensional figure. Square is regular figure.

It is regular polygon.

Figure B: It is shape of parallelogram whose opposite sides are parallel and equal. But adjacent sides are unequal. hence, It's not regular polygon.

Figure C: It is right angle triangle. Right angle triangle never be regular polygon. because all three sides are not equal.

Figure D: It is trapezoid. Trapezoid never be a regular polygon because their opposite sides never be equal.

Hence, Figure A is regular polygon.

step-by-step explanation: