Geometry

Question 1

two-dimensional shapes

Answer 1

flat shapes (squares,circles)

Question 2

rechter Winkel

Answer 2

right angle ( 90°)

Question 3

spitzer Winkel

Answer 3

acute angle ( angle less than 90°)

Question 4

stumpfer Winkel

Answer 4

obtuse angle ( angle more than 90°)

Question 5

innerer Winkel

Answer 5

inner angle

Question 6

äußerer Winkel

Answer 6

outer angle

Question 7

Geometry

Answer 7

Geometry is a major branch of mathematics that deals with the measurement, properties, and relationships of points, lines, angles, surfaces, and solids.

Question 8

plane geometry

Answer 8

geometry that deals with flat or plane shapes

Question 9

triangle

Answer 9

simplest two-dimensional shape with three sides and three angles

Question 10

equilateral triangle

Answer 10

equal sides and equal angles ( each 60°)

Question 11

isosceles triangle

Answer 11

two equal sides ( angles ,opposite the equal sides are also, equal)
isosceles: greek for equal legs

Question 12

scalene triangle

Answer 12

no equal sides or angles

Question 13

quadrilateral

Answer 13

shape with four straight sides and four angles

Question 14

square

Answer 14

quadrilateral shape with four equal sides ( in length) and angles

Question 15

Parallelogram

Answer 15

opposite sides are parallel and equal in length

Question 16

Rhombus

Answer 16

a parallelogram with equal sides

Question 17

trapezium

Answer 17

at least one pair of parallel sides

Question 18

kite

Answer 18

two pairs of adjacent sides with equal lengths ( two isosceles with their bases joined)

Question 19

isosceles trapezium

Answer 19

the non-parallel sides are equal in length ( has one line of symmetry)

Question 20

Polygons

Answer 20

shape with three or more sides

Question 21

regular

Answer 21

polygon whose sides and angles are equal

Question 22

Pythagoras’ Theorem

Answer 22

in a right-angled triangle, the area of the square drawn on the hypotenuse is equal to the sum of the areas of the squares drawn on the other two sides.

Question 23

hypothenuse

Answer 23

The longest side of a right-angled triangle , opposite of the right angle)

Question 24

Three-dimensional shapes

Answer 24

have length, width and height

Question 25

cube

Answer 25

shape with 6 square faces. The line where two faces meet is called an edge. A cube has 12 edges. The edges meet at the corner. A cube has 8 corners

Question 26

cuboid / rectangular prism / box

Answer 26

same number of faces, edges and corners as a cube but the faces are rectangular

Question 27

Prism

Answer 27

A solid with a constant cross section

Question 28

cross section

Answer 28

the shape you get when you cut a shape to one of its ends. It is constant if both halves are the same along the length.

Question 29

circular prism

Answer 29

cylinder

Question 30

pyramid

Answer 30

a polygon with equal triangular faces and one base (the shape of the base defines the type of pyramid) All lines drawn from the edge of the base must meet at the apex ( top point)

Question 31

tetrahedron

Answer 31

A pyramid with a triangular base

Question 32

cone

Answer 32

A pyramid with a circular base

Question 33

sphere

Answer 33

three-dimensional shape, which like a ball, is circular in every direction

Question 34

||

Answer 34

parallel to

Question 34

≅

Answer 34

congruent to

Question 35

Describing dimensions of shapes

Answer 35

1. This rectangular prism has a width/length/height/volume/total surface area of … cm/cm2/cm3.
2. This rectangular prism is … cm/cm3 in width/length/height/volume
3. This rectangular prism is … cm + adjective
4. The volume/the total surface area of this rectangular prism is ……