Geometry Symmetry

The radius of a circle is 4 cm. How much is half of the perimeter of the circle?

• 11,5 cm

• 25,13 cm

• 9,46 cm

• 12,57 cm

Tags

CCSS.7.G.B.4

If we connect two points on the circumference of the circle with a straight line, we get

• a radius

• a sector

• a chord

• a tangent line

The cente of the circumscribed circle in any triangle is the intersection of the

• median lines

• heights

• angle bisectors

• perpendicular side bisectors

Tags

CCSS.HSG.C.A.3

The side of a square is 5 cm and the side of another square is 20 cm. What is the ratio of the areas of these squares?

• 5:20

• 1:16

• 1:4

• 1:64

Tags

CCSS.7.G.A.1

In an isosceles triangle .... are of the same size.

• all the three sides

• two angles

• all the three angles

• all the three angles and all the three sides

For the transformation called 'central reflection' we need

• a vector

• an axis of symmetry

• a centre, which is a point

• a ratio

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Any equilateral triangle has

• a right-angle

• a hypotenuse

• all its sides in the same size

• a circumscribed quadrilateral

Tags

CCSS.4.G.A.2

Two triangles are similar if

• two sides are the same

• the ratio of two sides is the same

• two ratio od all the three sides are equal

• they both have a rigth-angle

Tags

CCSS.HSG.SRT.A.2

The perimeter of a triangle with vertices (0, 4), (0, 0) and (3, 0) is

• 10

• 11

• 12

• 14

Tags

CCSS.HSG.GPE.B.7

The fourth vertex D of a parallelogram ABCD whose three vertices are A(-2, 3), B(6, 7) and C(8, 3) is

• (0, 1)

• (0, -1)

• (-1, 0)

• (1, 0)

Tags

CCSS.6.G.A.3