- A45
- B50
- C100
- D55
Step-by-Step Solution
DE is parallel to BC, so angle ADE and angle ABC are corresponding angles; thus angle ABC = 50°.
Answer: B) 50
In triangle ABC, D and E are mid-points of AB and AC. If angle ADE = 50°, then angle ABC = ?
Class 9The Mid-point TheoremGeometry — Quadrilaterals
Master this chapter in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All The Mid-point Theorem practice questions
More Class 9 The Mid-point Theorem practice
Mid-points of all four sides of a quadrilateral are joined in order. The figure obtained…The mid-points of a rectangle's sides are joined in order. The resulting quadrilateral…The mid-points of a rhombus's sides are joined in order. The figure formed is a:The mid-points of a square's sides joined in order form a:In triangle ABC, M and N are the mid-points of AB and AC. Then MN and BC are: