Geometry - grade 8

The longest side in the right-angled triangle is ------------------

If the lengths of two sides in a triangle are 2 cm. and 7 cm.,

then----------<the length of the third side <---------

If the length of the median drawn from a vertex of a triangle equals half the opposite side to this vertex in length, then----------------(type of the angle)

If the measure of an angle in the isosceles triangle equals 60°, then the triangle is -----------

In the opposite figure:

Triangle ABC is equilateral, then m (ACD) =

• 60

• 120

• 135

• 45

In Triangle ABC which is right-angled at B, if AC = 20 cm., then the length of the median of the triangle drawn from B equals

• 10 cm

• 8 cm

• 6 cm

• 5 cm

XYZ is a triangle in which: m (Z) = 70° and m (Y) = 60°, then YZ ----------XY

• >

• <

• =

• Twice

The lengths which can be lengths of sides of a triangle are ----------

• 0,3,5

• 3,3,5

• 3,3,6

• 3,3,7

The triangle in which the measures of two angles of it are 42° and 69° is -----------

• an isosceles triangle.

• an equilateral triangle.

• a scalene triangle.

• a right-angled triangle.

In the opposite figure: m(<C)=2m (<A) and , BC = 6 cm.

, then AC =

• 3

• 6

• 9

• 12