Question
How many triangles are there in the given figure?
Solution
Single triangle = AOB, BOC, COD, DOE, EOA Triangles composed of two triangles = ADE, EOC, AOC, ABE Triangles composed of three triangles = BEC, ADC Triangles composed of five triangles = AEC
- In triangle DEF, GH is drawn parallel to side EF. If DG = 9 cm, GE = 3 cm and DH = 6 cm, find DF.
What is the height of an equilateral triangle with a side length of 12√5 cm?
In a ∆ABC, points P, Q and R are taken on AB, BC and CA, respectively, such that BQ = PQ and QC = QR. If ∠ BAC = 75°, what is the measure of &...
Two triangles DEF and XYZ are congruent to each other such that DE = 10 cm, YZ = 24 cm, and ∠DEF = ∠XYZ = 90⁰. Find the circumradius of ΔDEF.
...The sides of a triangle are 13 cm, 14 cm, and 15 cm. What is the area of the triangle?
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If two triangles EFG and UVW are congruent, then which of the following statement(s) is/are true?
I. EF = UV
II. ∠FEG = ∠UVW
Find the inradius of an equilateral triangle whose altitude is 9√3 cm.
In a right-angled triangle, the legs are in the ratio 3:4, and the hypotenuse is 25 cm. Find the perimeter of the triangle.
If the angles of a triangle are in the ratio of 2:5:8, then find the value of the biggest angle.
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