The sides of triangle are in A.P. and the greatest angle exceeds the least by 90∘. The sides are in the ratio: View Solution If the lengths of the sides of a triangle are in AP and the greatest angle is double the smallest, then a ratio of lengths of the sides of this triang...
An equilateral triangle is also an acute angle for having angles that total 180 degrees. ___ 6. When the sum of two angles in a triangle is 120 degrees, it is called an obtuse triangle. ___ 7. A right triangle is made up of angles less than 89 degrees. ___ 8. If a door...
Apothem is the line from the center of the pentagon to a side, intersecting the side at 90 degrees right angle. Area of Pentagon Using area of Isosceles triangles If the pentagon is divided into five equal isosceles triangles, then we can find the area of an individual triangle and add th...
A triangle is also a shape. The prefix“ tri” on the base word“ angle” means“ three”. A triangle always has three sides and three angles. All the pages of your textbooks have four square corners, but the pages are not square. Can you tell why not?It is because the sides of...
The properties of a triangle are : Sides, Angles and Vertices –We already know that a triangle always has exactly three sides and three vertices. This is the basic property of any triangle. Angle Sum Property of a Triangle –The sum of the measure of the three interior angles of a trian...
Prove that the line segment joining the mid-point of the hypotenuse of a right triangle to its opposite vertex is half of the hypotenuse. If the sides of a triangle are produced in order, prove that the sum of the exterior angles so formed is equal to...
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Answer to: In an equilateral triangle ABC, the midpoints of the sides are labelled D, E and F. Prove that triangle DEF is an equilateral triangle...
Given in the△ABC,a,b,c are three sides of the triangle,and 3 a = 2 b + 1 c ,then∠A is( ) (英汉词典acute angle:锐角;obtuse angle:钝角) A、acute angle B、right angle C、obtues angle D、acute angle or obtues angle 试题答案 ...
Step by step video, text & image solution for If the equal sides AB and AC (each equal to 5 units) of a right-angled isosceles triangle ABC are produced to P and Q such that BP cdot CQ = AB^(2), then the line PQ always passes through the fixed point (where A is the origin ...