. Check the given measurements whether it could make a triangle (a) 7 cm, 2 cm and 5 cm

(b) 10 cm, 12 cm and 14 cm.

They do not make triangles.

Step-by-step explanation:

You automatically know that c is going to be the biggest number of each triangle since it is the largest side. So you would use both of these formulas:

a² + b² = c²

+ = which is false

10² + 12² = 14² is false as well

Hope this helps!!

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.

i think 1: 2

step-by-step explanation: