Shapes

Question 1

Concave Polygon

Answer 1

polygon that has at least one interior angle that is more than 180⁰; at least one vertex seems to point inward; diagonals pass outside of the polygon

Question 2

Obtuse triangle

Answer 2

Triangle with one obtuse angle; one angle measuring more than 90⁰

Question 3

Edge

Answer 3

where these faces meet

Question 4

Irregular polygon

Answer 4

A polygon with sides and angle measures that are not all the same

Question 5

Parallelogram

Answer 5

Quadrilateral with two pairs of opposite sides that are parallel to each other

Question 6

Right triangle

Answer 6

triangle with one right angle measuring exactly 90⁰

Question 7

Acute triangle

Answer 7

triangle with each angle being an acute angle; each angle measuring less than 90⁰

Question 8

prism

Answer 8

a three-dimensional figure with quadrilateral faces with two congruent bases (and no apex)

Question 9

Regular prism

Answer 9

A prism with regular polygons for bases.

Question 10

Vertices

Answer 10

the corners of the shape

Question 11

Pyramid

Answer 11

a shape in three dimensions that has a polygon for a base and triangular faces that meet at a point (the apex)

Question 12

circle

Answer 12

The set of all points equidistant (the same distance) from a given point (the center). Circles have no sides nor interior angles.

Question 13

Equilateral polygon

Answer 13

polygon with all sides congruent (equal length)

Question 14

sphere

Answer 14

set of points in 3-dimensional space that are all the same distance from a given point (the center)

Question 15

irregular prism

Answer 15

A prism with irregular polygons for bases

Question 16

face

Answer 16

the sides of the shape

Question 17

isosceles triangle

Answer 17

Triangle with (at least) two sides congruent to each other and their two base angles congruent to each other

Question 18

square

Answer 18

Rectangle with four congruent sides (four sides of the same measure)

Question 19

polygon

Answer 19

a multi-sided, closed figure made up of vertices (corners) and edges (sides)

Question 20

Equilateral Triangle / Equiangular Triangle

Answer 20

A regular polygon of three sides; triangle with all sides congruent to each other and all angles congruent to each other.

Question 21

slant height

Answer 21

the distance from the apex (top) to an edge of the base

Question 22

convex polygon

Answer 22

polygon for which all interior angles are less than 180⁰; vertices seem to point outward; all diagonals will be contained within the polygon

Question 23

quadrilateral

Answer 23

polygon with four vertices and four sides

Question 24

rectangle

Answer 24

Parallelogram with four right (90°) angles. Both pairs of opposite sides are parallel. Sides do NOT need to be congruent, but can be.

Question 25

scalene triangle

Answer 25

Triangle with no sides or angles congruent to each other. All three sides are of different lengths.

Question 26

trapezoid

Answer 26

Quadrilateral with one pair of parallel sides and one pair of non-parallel sides

Question 27

regular polygon

Answer 27

A polygon with all sides congruent to each other and all angle measures congruent to each other

Question 28

rhombus

Answer 28

Parallelogram with all sides of congruent length.

Question 29

triangle

Answer 29

polygon with three vertices and three sides

Question 30

Equiangular Polygon

Answer 30

polygon with all angles congruent (equal measure)

Question 31

right prism

Answer 31

a prism that has the two bases aligned with each other vertically, creating sides that are perpendicular to the bases (meet the bases at right angles), creating rectangular faces

Question 32

oblique prism

Answer 32

a prism with bases that are not exactly above/below each other, creating faces that are parallelograms (without right angles)