If m∠ bac 60° what is m∠ dbc
Web（2）设eo与ad交于点m，连接ed．∵∠bac=60°，oa=oe，∴∠aeo是等边三角形， ∴ae=oa，∠aoe=60°，∴ae=a0=od，又由（1）知，ac∥od即ae∥od， 在rt pac中，∠pac=90°，∠apc=60°，ac=2 ，∴ap=ac•cot∠apc=2． Web【推荐1】 在平面直角坐标系中，点A（0，4），点B（2m，4）（m为常数，且m＞0），将点A绕线段AB中点顺时针旋转90°得到点C．经过A、B、C三点的抛物线记为G． (1)当m＝2时，抛物线G所对应的函数表达式为 ． (2)用含m的式子分别表示点C的坐标为 ； 抛物线G所对应的函数表达为 ．
If m∠ bac 60° what is m∠ dbc
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Web6 apr. 2024 · If m∠BAC = 98°, what is m∠BDC? Get the answers you need, now! Joker7721 Joker7721 04/06/2024 Mathematics High School answered If m∠BAC = 98°, what is … Web21 sep. 2024 · If m∠ABC=6x+13 and m∠DBC=4x−3 what is the value of x? I NEED HELP PLS See answer Advertisement Advertisement Mathhater6 Mathhater6 Answer: x=8. …
Web分析 连接bd，am，首先证明出∠abd=∠dbc，结合题干条件得到∠bdc=90°，进而得到dc=md，即可得到 mdc是等边三角形，四边形abmd是菱形， mab， mad和 mc′d′是等边三角形，根据asa证明 bme≌ amf，于是得到me=mf，结合∠emf=60°，即可证明 mef是等边三角形，可得∠efm=∠c′=60°，则得ef∥c′d′． WebSolution Verified by Toppr Correct option is D) In ΔAOB, BO≈OA (Diagonals of a rectangle are equal and bisects each other) ⇒OAB=∠OBA=48 ∘ (isos. Δ property) …
Web3. At how many points can two distinct lines intersect. 1. If two lines are coplanar, which of the following must be true. All points on the lines are coplanar. What is the intersection of … Web9 okt. 2015 · since DB bisects the angle ABC, the two smaller angles are equal. So, 12x+24 = 20x+16. So, find x, and you can figure the angles. answered by Steve. October 9, 2015. 36.
Web25 aug. 2024 · If m∠ABD=81° , what are m∠ABC and m∠ DBC? D A B C (7x−5)° (7x+2) ° Log in ...
WebWhat is m∠ABC? Justify your reasoning. (Adjacent angles ABD and DBC. The measure of angle ABD is 15 degrees, and the measure of angle DBC is 40 degrees.) Using the … headlands capital secondary fundWeb{答案} c{解析}本题考查了中心对称图形与轴对称图形的概念.判断轴对称图形的关键是寻找对称轴,图形两部分沿对称轴折叠后完全重合;判断中心对称图形的关键是要寻找对称中心, … gold mic funky fridayWeb23 sep. 2024 · 2 answers. If BD bisects the angle, then the two smaller angles are congruent. That means their measures are equal. That means that. 2y-3 = y+12. y=15. Now you can determine the measures. oobleck. September 23, 2024. gold mia and tiaWebUsing a protractor, m∠ABD = 50. 50 < 90, so ∠ABD is an acute angle. b. ∠DBC Using a protractor, m∠DBC = 115. 180 > 115 > 90, so ∠DBC is an obtuse angle. c. ∠EBC Using a protractor, m∠EBC = 90. ∠EBC is a right angle. Exercises Refer to the figure at the right. 1. Name the vertex of ∠4. 2. Name the sides of ∠BDC. 3. Write ... headlands cafe fort bragg caWeb3 jun. 2024 · BAC = 55 BCA = 55 Since we know two of the angles we will use the angle addition postulate to find angle ABC. ABC + BAC + BCA = 180 ABC + 55 + 55 = 180 ABC + 110 = 180 ABC = 70 Line BD is angle bisector of angle B. SO angle DBC is half the … gold michael jackson pantsWeb14 apr. 2024 · What is m∠DBC? There is angle ABC which is divided into two angles, angle ABD having (3x + 22) degrees and angle DBC having (x - 4) degrees. m∠DBC = ° Follow • 1 Add comment Report 1 Expert Answer Best Newest Oldest Mark M. answered • 04/14/21 Tutor 5.0 (270) Mathematics Teacher - NCLB Highly Qualified About this tutor › m∠ABC … gold mexican jewelryWeb3 years ago. Two angles are called complementary if their measures add to 90 degrees, and called supplementary if their measures add to 180 degrees. Note that in these definitions, it does not matter whether or not the angles are adjacent; only their measures matter. For … headlands capital management