Find the value of angle 1 + angle 2.
Step by step explanation please
Answers
Answer:
angle 1 = 60°
angle 2 = 45°
Answer:
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Page No 25:
Question 1:
Observe the figure and complete the table for ∠AWB.
Points in the interior
Points in the exterior
Points on the arms of the angles
ANSWER:
Points in the interior R, C, N, X
Points in the exterior T, U, Q, V, Y
Points on the arms of the angles A, W, G, B
Page No 25:
Question 2:
Name the pairs of adjacent angles in the figures below.
ANSWER:
Two angles which have a common vertex, a common arm and separate interiors are said to be adjacent angles.
The pairs of adjacent angles are given below:
∠ANB and ∠BNC,
∠BNC and ∠ANC,
∠ANC and ∠ANB,
∠PQR and ∠PQT
Page No 25:
Question 3:
Are the following pairs adjacent angles? If not, state the reason.
(i) ∠PMQ and ∠RMQ (ii) ∠RMQ and ∠SMR
(iii) ∠RMS and ∠RMT (iv) ∠SMT and ∠RMS
ANSWER:
Two angles which have a common vertex, a common arm and separate interiors are said to be adjacent angles
(i)
In ∠PMQ and ∠RMQ, M is the common vertex and MQ is the common arm.
Therefore, ∠PMQ and ∠RMQ are adjacent angles.
(ii)
The angles ∠RMQ and ∠SMR have a common vertex M, but don't have common arm.
Therefore, ∠RMQ and ∠SMR are not adjacent angles.
(iii)
The angles ∠RMS and ∠RMT have a common vertex M, but don't have common arm.
Therefore, ∠RMS and ∠RMT are not adjacent angles.
(iv)
In ∠SMT and ∠RMS, M is the common vertex and SM is the common arm.
Therefore, ∠SMT and ∠RMS are adjacent angles.