1.- Classify this triangle:
a) Scalene acute triangle
b) Scalene right-angled triangle
c) Scalene obtuse triangle
d) Isosceles right-angled triangle
2.- Decide which of the following sentences is true:
a) The three perpendicular bisectors converge at a point called incenter
b) The three altitudes converge at a point called center of mass
c) The three angle bisectors converge at a point called circumcenter
d) The geometric barycenter is the center of mass of the triangle
3.- Classify this quadrilateral:
a) Rhombus
b) Parallelogram
c) Square
d) Trapezium
4.- If the catheti of a right triangle measure 18 and 24 cm, the hypotenuse measures:
a) 15.87 cm
b) 30 cm
c) 28 cm
d) 29.16 cm
5.- If one of the cathetus of a right triangle measures 10 m, and the hypotenuse measures 26 m, the other cathetus measures:
a) 24 m
b) 27.85 m
c) 30 m
d) 20.11 m
6.- The diagonal of a rectangle whose base is 10 m and the height is 5 metres is:
a) 11 m
b) 12 m
c) 11.18 m
d) 12.27 m
7.- The area of this paralelogram is:
a) 30 cm2
b) 15 cm2
c) 120 cm2
d) 60 cm2
8.- And its perimeter is:
a) 36 cm
b) 34 cm
c) 17 cm
d) None of them
9.- The perimeter of this trapezium is:
a) 46 cm
b) 48 cm
c) 40 cm
d) 42 cm
10.- The area of the purple zone of this figure is:
a) 1.62 m2
b) 3.14 m2
c) 2.35 m2
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