In triangle abc ..d,e and f are the mid points of side ab,ac and bc respectively. If de and df are joined find the perimeter of bdef
Answers
Step-by-step explanation:
data :ABC is a triangle d,e,f are points on ab,ac and ac
such that BDEF is a parallelogram so perimeter of parallelogram = 2(a+b)
a= side=ef=bf=bd=de
b= base=bf
=2(ef+bf)=2ef+2bf
Answer:
1. ABCD is a parallelogram such that its diagonals are equal. What is the measure of ∟ABC?
2. In a parallelogram ABCD, if ∟C = 80° then what is the measure of ∟A?
3. In a parallelogram ABCD, if ∟A is 4/5 of ∟B, then what is ∟A?
4. Each side of a rhombus is 15 cm. if the length of one of its diagonals is 18 cm, then what is the length of the other diagonal?
5. ABCD is a rhombus such that ∟ADB = 50°, then what is the measure of ∟ACB?
6. A diagonal of a rectangle is inclined to one side of the rectangle at 25°. What is the measure of acute angle between the diagonals?
7. Diagonals of a parallelogram ABCD intersect at O. if ∟BOC = 90°and ∟BDC = 40°, then what is the measure of ∟OAB?
8. Name various kinds of parallelogram.
9. In a ΔABC, D, E and F are mid-points of sides AB, AC and BC respectively. If DE and DF are joined, find the perimeter of BDEF.
10. A diagonal of a parallelogram divides it into how many congruent triangles?
Step-by-step explanation:
mujhe iska btaa do