Geometry

Triangles

Medium

From the figure, find $x$ .

✅ Correct Option: 2

In triangle ACO, angle A = 90 and angle C = 45, so angle AOC = 180 - 90 - 45 = 45.

Angle DOB = angle AOC = 45 (vertically opposite).

In triangle DOB: angle D + angle DOB + angle B = 180, so 65 + 45 + x = 180, giving x = 70.

2026: 19 May Shift 1

Find the area of triangle whose base measures 22 cm and the corresponding height measure 18 cm.

2023: 24 May Shift 3

Find the coordinates of centroid of $\triangle ABC$ if the mid point of BC is D(2, 4) and vertex A is (2, -3).

2023: 15 June Shift 2

Find the area of an equilateral triangle each of whose sides measures 4 cm:

2025: 27 May Shift 1

If the area of an equilateral triangle is $36\sqrt{3}$ cm², then the length of the side is:

2025: 22 May Shift 2

The area of a right-angled triangle with hypotenuse 17 cm and one side being 8 cm shall be:

2023: 21 May Shift 1

From the figure, what is the value of x?

From the figure, find xxx.