Please enter your email: If the longest side of a right-angled triangle is c cm and the other sides are a cm and b cm, Pythagoras’ Theorem states that ……. A. a2 x b2 = c2 B. (a + b)2 = c2 C. a2 + b2 = c2 D. a2 – b2 = c2 In a right-angled triangle the sides forming the 90° angle are 6 cm and 8 cm. What is the length of the third side? A. 10 cm B. 12 cm C. 14 cm D. 16 cm The following sets of numbers represent the lengths of the sides of a triangle. Which is not a right-angled triangle? A. 15, 20, 25 B. 18, 24, 30 C. 16, 30, 36 D. 15, 36, 39 A triangle has sides of length 4 cm, 5 cm and 6 cm. Which of these statements is not true? A. The three angles add up to 180° B. All three angles are acute C. The triangle is scalene D. The largest angle is 90° The hypotenuse of a right-angled triangle is 26 cm. One of the shorter sides is 10 cm. How long is the third side? A. 30 cm B. 24 cm C. 16 cm D. 8 cm A right-angled isosceles triangle has hypotenuse of length 15 cm. What are the angles at either end of the hypotenuse? A. 15° and 75° B. 30° and 60° C. 45° and 45° D. 20° and 70° A rectangle has length 2.4 m and width 0.7 m. How long is its diagonal? A. 2.0 m B. 2.5 m C. 3.0 m D. 3.5 m The foot of a ladder of length 3.75 m is 1.4 m away from a vertical wall. How high up the wall will the ladder reach (to the nearest 1 cm)? A. 3.84 m B. 3.48 m C. 3.24 m D. 3.18 m The cross-section of a porch roof is an isosceles triangle with height 0.8 m and base 3.0 m. How long is each sloping roof section? A. 3.1 m B. 2.3 m C. 1.9 m D. 1.7 m 10. In a triangle, base 25 cm and height 12 cm, the perpendicular from the base to the opposite vertex divides the base in the ratio 3:2. How long are the other two sides (to 1dp)? A. 15.6 cm and 19.2 cm B. 16.3 cm and 18.9 cm C. 15.6 cm and 16.3 cm D. 18.9 cm and 19.2 cm Loading … Question 1 of 10