TRIANGLE Flashcards
Learn types of a triangle (6 cards)
1
Q
When one of the angles of a triangle is 90°, it is called
A
right-angled triangle
2
Q
When all the angles of a triangle are acute, that is, they measure less than 90°, it is called
A
an acute-angled triangle
3
Q
When one of the angles of a triangle is an obtuse angle, that is, it measures greater than 90°, it is called
A
an obtuse-angled triangle
4
Q
When all three sides have the same length
A
equilateral triangle
5
Q
When two sides of a triangle are equal or congruent
A
isosceles triangle
6
Q
When none of the sides of a triangle are equal
A
scalene triangle
