In triangle ABC,AB and AC are equal and angle B and C both are equal to 80 degree.Point D on AC and point E on AB are such that angle ABD is equal to 50 degree and angle ACE is equal to 60 degree.Find angle BDE

What are the differences between similar triangles and congruent triangles?

What are Armstrong numbers?

All real numbers are rational numbers.

A) True

B) False

The L.C.M of the smallest 2 digit composite number and the smallest composite number is:

• (a) 12
• (b) 4
• (c) 20
• (d) 44

Are all natural numbers also whole numbers?