Advertisements
Advertisements
Question
In the following, find the marked unknown angle:
Advertisements
Solution
Since, sum of all angles of triangle = 180°
1st Triangle 50° + 80° + b = 180°
⇒ 130°+ &= 180°
⇒ b = 180° – 130°
b = 50°
II nd Triangle 40° + 45° + a = 180°
⇒ 85° + a = 180°
⇒ a = 180° - 85
a = 95°
APPEARS IN
RELATED QUESTIONS
ABC is a triangle in which ∠A — 72°, the internal bisectors of angles B and C meet in O.
Find the magnitude of ∠BOC.
Compute the value of x in the following figure:
Side BC of a triangle ABC has been produced to a point D such that ∠ACD = 120°. If ∠B = \[\frac{1}{2}\]∠A is equal to
Find the unknown marked angles in the given figure:
Can a triangle together have the following angles?
33°, 74° and 73°
Classify the following triangle according to sides:
The length of the three segments is given for constructing a triangle. Say whether a triangle with these sides can be drawn. Give the reason for your answer.
8.4 cm, 16.4 cm, 4.9 cm
S is any point on side QR of a ∆PQR. Show that: PQ + QR + RP > 2PS.
In the following figure, AB = BC and AD = BD = DC. The number of isosceles triangles in the figure is ______.
In the following figure, ∠BAC = 90° and AD ⊥ BC. The number of right triangles in the figure is ______.
