Advertisements
Advertisements
प्रश्न
In the following, find the marked unknown angle:
Advertisements
उत्तर
Since, sum of all angles of triangle = 180°
Hence, 70° + 72° + z = 180°
⇒ 142°+ z = 180° ”
⇒ z = 180° - 142°
z = 38°
APPEARS IN
संबंधित प्रश्न
Can a triangle have All angles equal to 60°? Justify your answer in case.
Determine the measure of each of the equal angles of a right-angled isosceles triangle.
OR
ABC is a right-angled triangle in which ∠A = 90° and AB = AC. Find ∠B and ∠C.
Fill in the blank to make the following statement true:
An exterior angle of a triangle is equal to the two ....... opposite angles.
In a Δ ABC, AD bisects ∠A and ∠C > ∠B. Prove that ∠ADB > ∠ADC.
Find the unknown marked angles in the given figure:
One angle of a triangle is 61° and the other two angles are in the ratio `1 1/2: 1 1/3`. Find these angles.
One angle of a right-angled triangle is 70°. Find the other acute angle.
The length of the three segments is given for constructing a triangle. Say whether a triangle with these sides can be drawn. Give the reason for your answer.
17 cm, 7 cm, 8 cm
Q is a point on the side SR of a ∆PSR such that PQ = PR. Prove that PS > PQ.
What is common in the following figure?
 |
 |
| (i) | (ii) |
Is figure (i) that of triangle? if not, why?
