WebOB=OD= two segments of diagonal BD bisected by O. ∠A=60 ∘. ∴∠OAB= 260 ∘=30 ∘. ⇒OB=OD=3cm. ∴BD=6cm.
in a rhombus ABCD, angle ABC = 64 degrees. calculate angle BCD, angle
WebMar 11, 2024 · In a rhombus ABCD, m∠A = 31°. Point O is a point of intersection of diagonals. Find the measures of the angles of triangle ΔBOC. See answers Advertisement SansCube4Life Answer: ∠BOC = 90 degrees, ∠OCB = 15.5 degrees, ∠OBC = 74.5 degrees You're Welcome Advertisement IThinkIKnowTheAnswer Answer: m∠ COB= 90 degrees … Web∠ A E D = ∠ B E D ( right angle) A E = E B ( DE bisects AB) ∴ A E D ≅ B E D ( by SAS property) ∴ A D = B D ( by C.P.C.T) But A D = A B ( sides of rhombus are equal) ⇒ A D = A B = B D. ∴ ABD is an equilateral triangle. ∴ ∠ A = 60 ∘. ⇒ ∠ A = ∠ C = 60 ∘ (opposite angles of rhombus are equal) But Sum of adjacent angles ... birthday stream overlay
In a rhombus with sides A, B, C, and D, the diagonals intersect
WebAug 29, 2024 · Since the rhombus has angles that measure 120 and 60 degrees, we see that when they are bisected, they become 60 and 30 degrees, respectively. Therefore, each of … WebABCD is a rhombus. So all of its sides are equal. Now, BC = DC ⇒ ∠BDC = ∠DBC = x (Angles opposite to equal sides are equal) Also, ∠BCD = 60° ∴ x + x + 60° = 180° ⇒ 2x = 120° ⇒ x = 60° i.e., ∠BCD = ∠BDC = ∠DBC = 60° So, ∆BCD is an equilateral triangle. ∴ BD = BC = a Also, OB = a /2 Now, in ∆OAB, we have: AB^2= OA^2 + OB^2 Web28. Triangle ABC is an isosceles triangle. The measure of angle A is 15˚. Which statement CANNOT be true about the triangle? a. It is an acute triangle. b. It is an obtuse triangle. c. The measure of angle B is 150˚. d. The measure of angle B is 82.5˚. e. The side opposite the 15˚ angle is the longest side. 29. Rectangles are made of small ... dan thio ida