Triangle ABC is shown below: Given: ΔABC Prove: All three angles of ΔABC add up to 180°. The flowchart with missing reason proves the measures of the interior angles of ΔABC total 180°: Which reason can be used to fill in the numbered blank space? Alternate ...
As shown below, the area of the triangle ABC is 30cm2. Given that the length of line segment BC=12cm, what is the volume of the solid 3 D object that is produced by rotating the triangle about line BC?∴ 相关知识点: 试题来源: ...
4. Shown below is a triangular prism.Triangle ABC is a right angle triangle.。C E6cm12cm5A8cm B(a)Work out the length of BF...15.62...cm(4)(b)Work out the angle between the plane BEFC and plane ABED36.87O(2) 相关知识点: 试题来源: 解析 15.6236.874la) Bc= (Ocmo py thago...
In the figure, the measure of exterior angle BCD is twice the measure of angle A. What type of triangle is ABC? What type of triangle is shown below? a. Acute b. Right c. Obtuse If a triangle has a 90 degree angle, what is it called?
For isosceles triangle JKL shown below, which of the following is the measure of angle K to the nearest tenth of a degree? In a triangle, abc, with angles, a, b, and c and sides ab, bc, and ac, angle b is a right (90 degrees) angle....
∠c, and sides are a,b and c, as shown in the figure below. now, if any two sides and the angle between them are given, then the formulas to calculate the area of a triangle is given by: area (∆abc) = ½ bc sin a area (∆abc) = ½ ab sin c area (∆abc) = ...
As shown in the figure below, △ ABC is an equilateral triangle, and E is on AC. Connect BE, rotate AC around E, so that C lands on the position of D on BC, and A lands on the position of F. Connect AF. Show that quadrilateral ABCD is a parallelogram. 相关知识点: 试题来源:...
Triangle △ABC and collinear points A, C, and D are shown in the figure below. The measure of ∠A is 43°, the measure of ∠BCA is (4y)°, and the measure of ∠BC D is (11y)°. What is the measure of ∠B?B A)12°B)48°A43°(4y)C)132°(11y)°D)89°C DE)91° 相...
Triangle ABC is congruent to triangle DFE. Find y. (a) 12 (b) 13 (c) 12.5 (d) 13.5 Triangle MNO is shown below. Write the congruency statement for the triangle that is congruent to triangle MNO. triangle MNO is congr...
In \triangle ABC shown below, \overline{AB} \cong \overline{BC}. Prove: The base angles of an isosceles triangle are congruent. Right triangle __ABC__ is similar to triangle __XYZ__ because angle B is congruent to angle Y. If side __AB ...