Exam November math G8

The measure of the exterior angle of the equilateral triangle equals

The length of the hypotenuse of the right-angled triangle equals ............... the median drawn from the vertex of the right angle. the length of

The lengths of two sides in a triangle are 4 cm. and 9 cm. and it has one axis of symmetry, then the length of the third side is ........................

The quadrilateral ABCD in which $$\overline{BD}$$ is an axis of symmetry of $$\overline{AC}$$ may be

The base angles of the isosceles triangle are (a)  

In A ABC, if AB ⊥ BC and AB = BC, then m ( $$<$$ A) = (a)  

The triangle whose side lengths are (2x-1) cm., (X+3) cm., 7cm. becomes an equilateral triangle when X = (a)   cm.

The volume of a sphere is $$\frac{99000}{7}$$ cm³, calculate its radius length. ( π = $$\frac{22}{7}$$ )

(a)  

Find the S.S. of the inequality: -3 ≤ 2 X + 1 < 7 in R in the form of an interval, then represent the solution on the number line.

(a)  

If X = [ -1 , 4 [, Y = [ 2 , 6 ] using the number line find each of the following:

1- X U Y 2- X $$\cap$$ Y

(a)