Froggy Jumps Paso 3: Actividad en inglés sobre propiedad de los triángulos.Online version Elaborado por: Ervin Ricardo Ortiz Ibañez Mayerli Uribe Herrera Diana Milena Neira García Gerson David Navas Contreras by ERVIN ORTIZ 1 What is the sum of the interior angles of any triangle? a 90° b 180° c 360° 2 Which triangle has three equal sides? a Equilateral triangle b Isosceles triangle c Scalene triangle 3 If a triangle has sides of lengths 5 cm, 5 cm, and 8 cm, what type of triangle is it? a Isosceles b Equilateral c Scalene 4 How many sides does a triangle have? a 4 b 5 c 3 5 Which of the following is TRUE about a scalene triangle? a Two sides are equal. b All sides and angles have different measures. c All sides and angles are equal. 6 An isosceles triangle has a Two equal sides b No equal sides c Three equal sides 7 In any triangle, the longest side is always opposite to: a The largest angle. b The right angle only. c The smallest angle. 8 Which triangle has all angles less than 90°? a Obtuse triangle b Scalene triangle c Acute triangle 9 What is the perimeter of a triangle? a The space inside the triangle b The sum of all sides c The height of the triangle 10 In an equilateral triangle, if the perimeter is 27 cm, what is the length of each side? a 7 cm b 9 cm c 27 cm 11 How many angles does a triangle have? a 1 b 2 c 3 12 If a triangle has two equal angles, what can we conclude about its sides? a The sides opposite to those angles are also equal. b All three sides are different. c It is a right triangle. 13 What is the formula for the area of a triangle? a base × height b (base × height) ÷ 2 c side + side + side 14 A triangle can have: a Three vertices b Two vertices c Four vertices 15 Which shape is NOT a triangle? a Equilateral b Scalene c Rectangle 16 What do we call the longest side in a right triangle? a Radius b Hypotenuse c Base 17 Can a triangle have two right angles? a No b Yes c 18 In a right-angled triangle, if the base is 6 cm and the height is 4 cm, what is its area? a 12 cm2 b 10 cm2 c 24 cm2 19 If the exterior angle of a triangle measures 120°, what is the measure of its adjacent interior angle? a 30° b 60° c 90° 20 In a right-angled triangle, if one acute angle is 40°, what is the measure of the other acute angle? a 40° b 45° c 50°
